Tbh I know this isn’t helpful, but I recommend take the L and find better games to play. Errantly perma banning users shows a lack of consumer consideration and does not deserve further energy to fix. They fucked up, take your business elsewhere.
Again, I know it’s not helpful but I think worth considering. Companies some decades ago used to be user experience as the top goal, but that has gone to the sidelines for many companies, and I don’t think it’s good to normalize. Hence, boycott when it happens.
I’ve heard notion calendar is the best calendar software out there. If it also supports reminders really well (and I’m already a notion user), then maybe this is worth checking out.