diff --git a/package-lock.json b/package-lock.json
index ccf76bd..cb6ad22 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "@orionprotocol/sdk",
-  "version": "0.19.48-dev.6-rc-0",
+  "version": "0.19.76",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "@orionprotocol/sdk",
-      "version": "0.19.48-dev.6-rc-0",
+      "version": "0.19.76",
       "hasInstallScript": true,
       "license": "ISC",
       "dependencies": {
diff --git a/package.json b/package.json
index be211b4..1590d92 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@orionprotocol/sdk",
-  "version": "0.19.58-rc2",
+  "version": "0.19.58-rc3",
   "description": "Orion Protocol SDK",
   "main": "./lib/index.cjs",
   "module": "./lib/index.js",
diff --git a/src/Unit/Exchange/generateSwapCalldata.ts b/src/Unit/Exchange/generateSwapCalldata.ts
index bf18f6e..e96b992 100644
--- a/src/Unit/Exchange/generateSwapCalldata.ts
+++ b/src/Unit/Exchange/generateSwapCalldata.ts
@@ -64,7 +64,7 @@ export default async function generateSwapCalldata({
   }
   const wethAddress = safeGet(unit.contracts, "WETH")
   const curveRegistryAddress = safeGet(unit.contracts, "curveRegistry")
-  const {assetToAddress, swapExecutorContractAddress, exchangeContractAddress} = await simpleFetch(unit.blockchainService.getInfo)();
+  const { assetToAddress, swapExecutorContractAddress, exchangeContractAddress } = await simpleFetch(unit.blockchainService.getInfo)();
   let path = SafeArray.from(path_).map((swapInfo) => {
     swapInfo.assetIn = safeGet(assetToAddress, swapInfo.assetIn);
     swapInfo.assetOut = safeGet(assetToAddress, swapInfo.assetOut);
@@ -78,7 +78,7 @@ export default async function generateSwapCalldata({
   const swapDescription: ExchangeWithGenericSwap.SwapDescriptionStruct = {
     srcToken: path.first().assetIn,
     dstToken: path.last().assetOut,
-    srcReceiver: swapExecutorContractAddress,
+    srcReceiver: swapExecutorContractAddress ?? '',
     dstReceiver: receiverAddress,
     amount: amount,
     minReturnAmount: minReturnAmount,
@@ -127,7 +127,7 @@ export default async function generateSwapCalldata({
       calldata = await generateCurveStableSwapCalls(
         amountNativeDecimals,
         exchangeContractAddress,
-        swapExecutorContractAddress,
+        swapExecutorContractAddress ?? '',
         path,
         unit.provider,
         curveRegistryAddress
diff --git a/src/config/chains.json b/src/config/chains.json
index bddd7fb..7fd6966 100644
--- a/src/config/chains.json
+++ b/src/config/chains.json
@@ -122,7 +122,7 @@
     "shortName": "Polygon Mumbai",
     "code": "polygon",
     "baseCurrencyName": "MATIC",
-    "rpc": "https://rpc-mumbai.matic.today",
+    "rpc": "https://rpc.ankr.com/polygon_mumbai",
     "explorer": "https://mumbai.polygonscan.com/",
     "contracts": {
       "WETH": "",
diff --git a/src/services/BlockchainService/schemas/infoSchema.ts b/src/services/BlockchainService/schemas/infoSchema.ts
index 472a895..2c9ef32 100644
--- a/src/services/BlockchainService/schemas/infoSchema.ts
+++ b/src/services/BlockchainService/schemas/infoSchema.ts
@@ -11,7 +11,7 @@ const infoSchema = z.object({
   chainId: z.number(),
   chainName: z.string(),
   exchangeContractAddress: z.string(),
-  swapExecutorContractAddress: z.string(),
+  swapExecutorContractAddress: z.string().optional(),
   oracleContractAddress: z.string(),
   matcherAddress: z.string(),
   orderFeePercent: z.number(),
diff --git a/src/services/ReferralSystem/index.ts b/src/services/ReferralSystem/index.ts
index 0a8aff0..7711906 100644
--- a/src/services/ReferralSystem/index.ts
+++ b/src/services/ReferralSystem/index.ts
@@ -1,4 +1,4 @@
-import {fetchWithValidation} from 'simple-typed-fetch';
+import { fetchWithValidation } from 'simple-typed-fetch';
 import {
   errorSchema,
   miniStatsSchema,
@@ -10,9 +10,10 @@ import {
   ratingSchema,
   claimInfoSchema,
   aggregatedHistorySchema,
+  inviteCodeLinkSchema,
+  contractsAddressesSchema,
 } from './schemas/index.js';
-import {SupportedChainId} from "../../types.js";
-import contractsAddressesSchema from './schemas/contractsAddressesSchema.js';
+import type { SupportedChainId } from '../../types.js';
 
 type CreateLinkPayloadType = {
   referer: string
@@ -24,6 +25,11 @@ type ClaimRewardsPayload = {
   chain_id: number
 };
 
+type SubmitInviteCodekWithLinkPayload = {
+  inviteCode: string
+  referer: string
+};
+
 type SubscribePayloadType = {
   ref_target: string
   referral: string
@@ -34,7 +40,7 @@ type SignatureType = {
 };
 
 class ReferralSystem {
-  private readonly apiUrl: string;
+  private readonly apiUrl: string
 
   get api() {
     return this.apiUrl;
@@ -48,6 +54,8 @@ class ReferralSystem {
     this.createReferralLink = this.createReferralLink.bind(this);
     this.subscribeToReferral = this.subscribeToReferral.bind(this);
     this.getMyReferral = this.getMyReferral.bind(this);
+    this.getMyInviteCodeAndLink = this.getMyInviteCodeAndLink.bind(this);
+    this.submitInviteCodeWithLink = this.submitInviteCodeWithLink.bind(this);
     this.getGlobalAnalytics = this.getGlobalAnalytics.bind(this);
     this.getMiniStats = this.getMiniStats.bind(this);
     this.getRewardsMapping = this.getRewardsMapping.bind(this);
@@ -73,6 +81,36 @@ class ReferralSystem {
       },
     });
 
+  getMyInviteCodeAndLink = (refererAddress: string, suppressError = false) =>
+    fetchWithValidation(
+      `${this.apiUrl}/referer/invite/status2?suppress_error=${Number(
+        suppressError
+      )}`,
+      inviteCodeLinkSchema,
+      {
+        headers: {
+          'referer-address': refererAddress,
+        },
+      }
+    );
+
+  submitInviteCodeWithLink = ({
+    inviteCode,
+    referer,
+  }: SubmitInviteCodekWithLinkPayload) =>
+    fetchWithValidation(
+      `${this.apiUrl}/referer/invite/submit-code2`,
+      inviteCodeLinkSchema,
+      {
+        headers: {
+          'Content-type': 'application/json',
+          'invite-code': inviteCode,
+        },
+        method: 'POST',
+        body: JSON.stringify({ referer }),
+      }
+    );
+
   getDistinctAnalytics = (refererAddress: string) =>
     fetchWithValidation(
       `${this.apiUrl}/referer/view/distinct-analytics`,
@@ -130,13 +168,11 @@ class ReferralSystem {
           'Content-type': 'application/json',
         },
         method: 'POST',
-        body: JSON.stringify({payload, signature}),
+        body: JSON.stringify({ payload, signature }),
       }
     );
 
-  createReferralLink = (
-    payload: CreateLinkPayloadType
-  ) =>
+  createReferralLink = (payload: CreateLinkPayloadType) =>
     fetchWithValidation(`${this.apiUrl}/referer/create2`, linkSchema, {
       headers: {
         'Content-type': 'application/json',
@@ -145,9 +181,7 @@ class ReferralSystem {
       body: JSON.stringify(payload),
     });
 
-  subscribeToReferral = (
-    payload: SubscribePayloadType
-  ) =>
+  subscribeToReferral = (payload: SubscribePayloadType) =>
     fetchWithValidation(
       `${this.apiUrl}/referer/subscribe2`,
       linkSchema,
@@ -166,7 +200,10 @@ class ReferralSystem {
       `${this.apiUrl}/referer/ve/rating-table-leaderboard?chain_id=${chainId}`,
       ratingSchema,
       {
-        headers: refererAddress !== undefined ? {'referer-address': refererAddress} : {},
+        headers:
+          refererAddress !== undefined
+            ? { 'referer-address': refererAddress }
+            : {},
       },
       errorSchema
     );
@@ -201,7 +238,7 @@ class ReferralSystem {
     const queryParams: Record<string, string | number> = {
       n_per_page: itemPerPage,
       page,
-      suppress_error: 1
+      suppress_error: 1,
     };
 
     if (chainId !== undefined) {
@@ -212,7 +249,9 @@ class ReferralSystem {
       queryParams['history_filter'] = encodeURIComponent(types.join(','));
     }
 
-    const queryString = Object.entries(queryParams).map(([k, v]) => `${k}=${v}`).join('&')
+    const queryString = Object.entries(queryParams)
+      .map(([k, v]) => `${k}=${v}`)
+      .join('&');
 
     return fetchWithValidation(
       `${this.apiUrl}/referer/view/aggregated-history?${queryString}`,
@@ -224,8 +263,8 @@ class ReferralSystem {
       },
       errorSchema
     );
-  }
+  };
 }
 
 export * as schemas from './schemas/index.js';
-export {ReferralSystem};
+export { ReferralSystem };
diff --git a/src/services/ReferralSystem/schemas/index.ts b/src/services/ReferralSystem/schemas/index.ts
index c181860..f1a1391 100644
--- a/src/services/ReferralSystem/schemas/index.ts
+++ b/src/services/ReferralSystem/schemas/index.ts
@@ -9,3 +9,4 @@ export { default as ratingSchema } from './ratingSchema.js';
 export { default as claimInfoSchema } from './claimInfoSchema.js';
 export { default as aggregatedHistorySchema } from './aggregatedHistorySchema.js';
 export { default as contractsAddressesSchema } from './contractsAddressesSchema.js';
+export { default as inviteCodeLinkSchema } from './inviteCodeLinkSchema.js';
diff --git a/src/services/ReferralSystem/schemas/inviteCodeLinkSchema.ts b/src/services/ReferralSystem/schemas/inviteCodeLinkSchema.ts
new file mode 100644
index 0000000..248ff96
--- /dev/null
+++ b/src/services/ReferralSystem/schemas/inviteCodeLinkSchema.ts
@@ -0,0 +1,23 @@
+import { z } from 'zod';
+
+const inviteCodeLinkSchema = z.object({
+  link: z
+    .object({
+      referer: z.string(),
+      ref_link: z.string(),
+    })
+    .nullable(),
+  invite: z
+    .object({
+      code: z.string(),
+      data: z.null(),
+      limits: z.object({
+        tag: z.string(),
+        max_invites: z.number(),
+        max_ref_depth: z.number(),
+      }),
+    })
+    .nullable(),
+});
+
+export default inviteCodeLinkSchema;
diff --git a/src/services/ReferralSystem/schemas/linkSchema.ts b/src/services/ReferralSystem/schemas/linkSchema.ts
index 2e9022b..20545f2 100644
--- a/src/services/ReferralSystem/schemas/linkSchema.ts
+++ b/src/services/ReferralSystem/schemas/linkSchema.ts
@@ -3,7 +3,6 @@ import { z } from 'zod';
 const linkSchema = z.object({
   referer: z.string(),
   ref_link: z.string(),
-  option: z.number(),
 });
 
 export default linkSchema;