diff --git a/src/connector/TonhubConnector.ts b/src/connector/TonhubConnector.ts
index 503c4ea..ba2f3ea 100644
--- a/src/connector/TonhubConnector.ts
+++ b/src/connector/TonhubConnector.ts
@@ -313,7 +313,7 @@ export class TonhubConnector {
             });
                 
             
-            if (!session.data.ok) {
+            if (!session.ok) {
                 throw Error('Unable to create state');
             }
         });
@@ -375,7 +375,7 @@ export class TonhubConnector {
 
     getSessionState = async (sessionId: string): Promise<TonhubSessionState> => {
         return await backoff(async () => {
-            let session = this.transport.call('session_get', {
+            let session = await this.transport.call('session_get', {
                 id: sessionId
             });
             return this.ensureSessionStateCorrect(sessionId, session);
@@ -384,7 +384,7 @@ export class TonhubConnector {
 
     waitForSessionState = async (sessionId: string, lastUpdated?: number): Promise<TonhubSessionState> => {
         return await backoff(async () => {
-            let session = this.transport.call('session_wait', {
+            let session = await this.transport.call('session_wait', {
                 id: sessionId,
                 lastUpdated
             });
diff --git a/src/transport/TonhubEmbeddedTransport.ts b/src/transport/TonhubEmbeddedTransport.ts
index 76783e1..79bb971 100644
--- a/src/transport/TonhubEmbeddedTransport.ts
+++ b/src/transport/TonhubEmbeddedTransport.ts
@@ -10,7 +10,7 @@ export class TonhubEmbeddedTransport implements Transport {
     }
 
     private static get() {
-        if (!window || !(window as any).tonX) {
+        if (typeof window === 'undefined' || !(window as any)?.tonX) {
             return null;
         }
     
diff --git a/src/transport/TonhubHttpTransport.ts b/src/transport/TonhubHttpTransport.ts
index 705034e..c59c463 100644
--- a/src/transport/TonhubHttpTransport.ts
+++ b/src/transport/TonhubHttpTransport.ts
@@ -1,4 +1,5 @@
 import axios from 'axios';
+import { string } from 'fp-ts';
 
 export class TonhubHttpTransport implements Transport {
     private readonly _endpoint: string;
@@ -38,9 +39,6 @@ export class TonhubHttpTransport implements Transport {
             args,
             this.getAxiosConfig(),
         );
-        if (!session.data.ok) {
-            throw Error('Unable to create session: ' + JSON.stringify(session.data));
-        }
         return session.data;
     }
 
@@ -53,9 +51,6 @@ export class TonhubHttpTransport implements Transport {
             `${this._endpoint}/connect/` + args.id, 
             this.getAxiosConfig()
         );
-        if (!session.data.ok) {
-            throw Error('Unable to create session: ' + JSON.stringify(session.data));
-        }
         return session.data;
     }
 
@@ -66,22 +61,16 @@ export class TonhubHttpTransport implements Transport {
         
         let session = await axios.get(
             `${this._endpoint}/connect/` + args.id + '/wait?lastUpdated='+(args.lastUpdated || 0), 
-            this.getAxiosConfig()
+            { ...this.getAxiosConfig(), timeout: 30000 }
         );
-        if (!session.data.ok) {
-            throw Error('Unable to create session: ' + JSON.stringify(session.data));
-        }
         return session.data;
     }
 
     async createCommand(args: any) {
         let result = await axios.post(`${this._endpoint}/connect/command`, args, this.getAxiosConfig());
-        if (!result.data.ok) {
-            throw new Error('Cannot create command: ' + JSON.stringify(result.data));
-        }
         return result.data;
     }
-    async getCommand(appk: string) {
-        return (await axios.get(`${this._endpoint}/connect/command/` + appk, this.getAxiosConfig())).data;
+    async getCommand(args: { appk: string }) {
+        return (await axios.get(`${this._endpoint}/connect/command/` + args.appk, this.getAxiosConfig())).data;
     }
 }
\ No newline at end of file