Calendar alerts automatically change and repeat unexpectedly

My calendar changes the alert options that I set. I’d set it & literally a second later I can watch it change. Sometimes it won’t even let me select certain times that are available in the Alert or Second Alert dropdown. Also, some alerts will repeat multiple times after I’ve cleared it. Like 4-5 times or more!

I’ve tried closing out the app & going back in. I’ve tried restarting as well. I just try to remember to come back to the event in a day or so to see if it works.

It’s been doing this for a few months but it’s gotten worse in the last few weeks. I make sure to keep my software up to date. 😭😭😭