diff --git a/package.json b/package.json
index 4d3c030..ba203d6 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@itheum/sdk-mx-data-nft",
-  "version": "3.8.0-alpha.3",
+  "version": "3.8.0-alpha.4",
   "description": "SDK for Itheum's Data NFT Technology on MultiversX Blockchain",
   "main": "out/index.js",
   "types": "out/index.d.js",
diff --git a/src/common/utils.ts b/src/common/utils.ts
index e62d1c7..c43905e 100644
--- a/src/common/utils.ts
+++ b/src/common/utils.ts
@@ -616,7 +616,7 @@ export function getDataFromClientSessionCache(cacheKey: string) {
     return false;
   } else {
     // did it expire? is so, delete it from the cache
-    if (cacheObject.addedOn - Date.now() > cacheObject.expireAfter) {
+    if (Date.now() - cacheObject.addedOn > cacheObject.expireAfter) {
       console.log('getDataFromClientSessionCache: expired');
       delete sessionCache[cacheKey]; // remove it from cache as its expired
       return false;
diff --git a/src/config.ts b/src/config.ts
index e732939..4c4cc61 100644
--- a/src/config.ts
+++ b/src/config.ts
@@ -1,12 +1,3 @@
-/*
-Host apps like the data dex or explorer, when the MVX dappProvider in initialized (very early in the page)
-it calls a utility method that loads the best RPC to use in the ITH_GLOBAL_MVX_RPC_API_SESSION global variable
-so we aim to use that if available so this SDK uses the same RPC as the host to talk to the MVX chain
-*/
-declare const window: {
-  ITH_GLOBAL_MVX_RPC_API_SESSION: string;
-} & Window;
-
 export enum EnvironmentsEnum {
   devnet = 'devnet',
   testnet = 'testnet',
@@ -21,28 +12,17 @@ export interface Config {
 // note that in all rpc check methods below we check if window === 'undefined' as this is need for tests to pass
 const devnetNetworkConfig: Config = {
   chainID: 'D',
-  networkProvider:
-    typeof window === 'undefined'
-      ? 'https://devnet-api.multiversx.com'
-      : window.ITH_GLOBAL_MVX_RPC_API_SESSION ||
-        'https://devnet-api.multiversx.com'
+  networkProvider: 'https://devnet-api.multiversx.com'
 };
 
 const mainnetNetworkConfig: Config = {
   chainID: '1',
-  networkProvider:
-    typeof window === 'undefined'
-      ? 'https://api.multiversx.com'
-      : window.ITH_GLOBAL_MVX_RPC_API_SESSION || 'https://api.multiversx.com'
+  networkProvider: 'https://api.multiversx.com'
 };
 
 const testnetNetworkConfig: Config = {
   chainID: 'T',
-  networkProvider:
-    typeof window === 'undefined'
-      ? 'https://testnet-api.multiversx.com'
-      : window.ITH_GLOBAL_MVX_RPC_API_SESSION ||
-        'https://testnet-api.multiversx.com'
+  networkProvider: 'https://testnet-api.multiversx.com'
 };
 
 export const itheumTokenIdentifier: { [key in EnvironmentsEnum]: string } = {
@@ -85,20 +65,9 @@ export const livelinessStakeContractAddress: {
 };
 
 export const apiConfiguration: { [key in EnvironmentsEnum]: string } = {
-  devnet:
-    typeof window === 'undefined'
-      ? 'https://devnet-api.multiversx.com'
-      : window.ITH_GLOBAL_MVX_RPC_API_SESSION ||
-        'https://devnet-api.multiversx.com',
-  mainnet:
-    typeof window === 'undefined'
-      ? 'https://api.multiversx.com'
-      : window.ITH_GLOBAL_MVX_RPC_API_SESSION || 'https://api.multiversx.com',
-  testnet:
-    typeof window === 'undefined'
-      ? 'https://testnet-api.multiversx.com'
-      : window.ITH_GLOBAL_MVX_RPC_API_SESSION ||
-        'https://testnet-api.multiversx.com'
+  devnet: 'https://devnet-api.multiversx.com',
+  mainnet: 'https://api.multiversx.com',
+  testnet: 'https://testnet-api.multiversx.com'
 };
 
 export const networkConfiguration: { [key in EnvironmentsEnum]: Config } = {
diff --git a/src/datanft.ts b/src/datanft.ts
index 37acc54..6b7ed61 100644
--- a/src/datanft.ts
+++ b/src/datanft.ts
@@ -98,8 +98,9 @@ export class DataNft implements DataNftType {
   /**
    * Sets the network configuration for the DataNft class.
    * @param env 'devnet' | 'mainnet' | 'testnet'
+   * @param useSpecificApiEndpoint optional param to use a specific RPC API endpoint for the env, if not given, defaults to config default value. Value need to start with https://
    */
-  static setNetworkConfig(env: string) {
+  static setNetworkConfig(env: string, useSpecificApiEndpoint?: string) {
     if (!(env in EnvironmentsEnum)) {
       throw new ErrNetworkConfig(
         `Invalid environment: ${env}, Expected: 'devnet' | 'mainnet' | 'testnet'`
@@ -108,6 +109,14 @@ export class DataNft implements DataNftType {
     this.env = env;
     this.networkConfiguration = networkConfiguration[env as EnvironmentsEnum];
     this.apiConfiguration = apiConfiguration[env as EnvironmentsEnum];
+
+    if (
+      useSpecificApiEndpoint &&
+      useSpecificApiEndpoint.trim().includes('https://')
+    ) {
+      this.apiConfiguration = useSpecificApiEndpoint.trim();
+      this.networkConfiguration.networkProvider = useSpecificApiEndpoint.trim();
+    }
   }
 
   /**
diff --git a/tests/environment.test.ts b/tests/environment.test.ts
index 320bf71..40de54b 100644
--- a/tests/environment.test.ts
+++ b/tests/environment.test.ts
@@ -1,7 +1,3 @@
-declare const window: {
-  ITH_GLOBAL_MVX_RPC_API_SESSION: string;
-} & Window;
-
 import { ApiNetworkProvider } from '@multiversx/sdk-core/out';
 import { DataNftMarket, SftMinter } from '../src/index';