I had the same issue yesterday so I decided to troubleshoot. I found that the addons for Team HP Pool were causing the issues. I disabled HP Bar by Locastan but left every other mod enabled. This seemed to solve the issue for me as I have not had a problem entering games since. I hope this helps.
Battle not starting
in Issues & bug reporting
Posted
I had the same issue yesterday so I decided to troubleshoot. I found that the addons for Team HP Pool were causing the issues. I disabled HP Bar by Locastan but left every other mod enabled. This seemed to solve the issue for me as I have not had a problem entering games since. I hope this helps.