Ability to edit an event/series of events if times or locations change. Currently if an event changes time then the event or series has to be deleted and recreated.

Yes please! That would be so great! The ability to edit existing appointments in all ways would be great. Like OP said, you have to delete the recurring appointment and create a new one every time you need to edit one small part of it.

I've had the same issue on Android, Pixel6 phone, running latest OS update and app fully updated. I tried upgrading to the paid version and am still having this issue. I should be able to edit the repeat parameters in a recurring series of events, but am unable to. This is incredibly frustrating.