PBEM - Same computer?

Do you need to use the same computer to take turns in a pbem game? I don’t mean sharing between sides - I mean one side needing to use the same computer all of its turns.

I just tried to take my turn and can’t access the cards (this is for Battle Cry, but my question is in general).

My opponent had the same problem.

Is this just the way it is? Or is there a way around this issue?

Thanks!

You don’t need to play each turn on the same computer. Sides are locked to module passwords. Make sure your password is the same on each computer you want to play on.