Players unable to join during rally

I recently decided to try using Demiplane to run my next Avatar game. I made a game and had my players create accounts and join the party. I then would click the “Launch” button at the top and rally would pop up. When my players clicked the Join button, it said “unable to join game”. I tried making a few different games and with a few combinations of players, but no luck same message when they would try to join. I was also unable to cancel the rally once it started and would have to delete the group to stop it

That’s really unusual. Could you go ahead and put in a support ticket with your account details and a quick summary of what you’ve shared here so we can look into this?