Sometimes user might experience "Error retrieving information from server" after completing one click setup and trying to install any app from app store. This behavior is generally noticed after fresh BlueStacks installation.
In case you are facing this issue please click on the "retry tab" this should fix the issue.
If you continue facing the issue please restart BlueStacks using this URL
You can also try using the steps in the link below.
If following all the above mentioned steps does not resolve your issue Please write to us at support@BlueStacks.com