If I selected the wrong calendar

you can swap them out but you wont be able to get full progress on the other calendar if you do (from what I understood when reading)

Really how can I cancel the one I have up I don’t see a remove button

Select the other calendar and say Yes to replacing the one you picked. My game froze when I did it... but eh.

Ahh okay ya that’s what I did already but I needed the first one just assumed it was like the rest where you get them both. Was curious if there was a way to revert back after replacing

I didn't get that "replace" message at first. It said I'd reached my "limit" and was SOL. Only when I tried again, did I get the "Replace" option.

I’m not even sure I got a replace message tbh