You can make a Backup of your MODS and Dynos, just make sure to update the Triple baka and Character select mods (Delete this Two mods and add them again) before starting a new game, you can also check if another mod is responsible for this problem (deactivate them all and reactivate them one by one).
One more thing: Are you playing on Android? If so, then it's a port issue. For some reason, it's not detecting the 1.15.1 Character Select update. I have the same problem on my Android, but the PC version works perfectly.