ethereumGetAccountInfo only if there are some accounts

src/actions/BlockchainActions.js

@@ -92,6 +92,7 @@ export const onBlockMined = (network: string): PromiseAction<void> => async (dis
     await dispatch( Web3Actions.resolvePendingTransactions(network) );
 
     const accounts: Array<any> = getState().accounts.filter(a => a.network === network);
+    if (accounts.length > 0) {
         // find out which account changed
         const response = await TrezorConnect.ethereumGetAccountInfo({
             accounts,
@@ -106,6 +107,7 @@ export const onBlockMined = (network: string): PromiseAction<void> => async (dis
             });
         }
     }
+}
 
 export const onNotification = (payload: any): PromiseAction<void> => async (dispatch: Dispatch, getState: GetState): Promise<void> => {
 
@@ -179,8 +181,6 @@ export const init = (): PromiseAction<void> => async (dispatch: Dispatch, getSta
         for (let i = 0; i < networks.length; i++) {
             await dispatch( subscribe(networks[i]) );
         }
-    } else {
-        await dispatch( subscribe('ropsten') );
     }
 
     // continue wallet initialization