Calendar Reminders Keep Changing

I am creating calendar events, saving the event, then adding the reminders. It saves the Send ASAP reminder, but it keeps changing the other reminders, and/or deleting some.

What do you mean it is changing the other reminders?

Yes the more clear you can be the better help guidance we can provide. What is the step by step of what you are seeing.

I’ve attached a couple of screenshots. I set two reminders for 1 week and 2 days. After I save it, this time it changed it to 1 week and 1 day. I created another event and it only saved one of the reminders. It removed the second reminder. I’m not getting any error messages.