Im visiting my son who I gave one of the boards to and want to connect my mobile app to it. Do I have to create a separate account or can I somehow switch to this secondary board ?
You can switch to multiple boards on the same account with no issue.
Is this a ChessUp 2?
Yes, chessup2. How do I do that ? Go into setting and connect? Can I do it with my same id ? Or do I need to create a new one ?