Here's how: Error retrieving information ([RPC: S-7: AEC-0]) [Solved / Closed]
In Bluestack click on the top bar to the right or the time is displayed and slid down.
Click parameter
=> Advanced setting (at the bottom)
=> Application
=> Scroll all applications
=> Look for the Google Play Store app
=> Force stop => OK
=> Clear Data => OK
=> Click on the arrow at the top left to return to the list of applications
=> Google Services Framework
=> Force stop => OK
=> Clear Data => OK
Then click on the cross in the bottom right and reboot.
Normally it works now.