The only calendar that I use for input is my google calendar. My google account equals to a 'main' calendar(or however you could say..), and to that very main calendar I've added two more. Those two calendars represent holiday-dates, and the second is for another thing.

Anyways, those two 'extra' calendars creates duplicates of every input in my iPad calendar. Not anywhere else.

Any ideas how to solve this?

Hi Alexel..... - welcome to the forum!

If you are using iCloud to sync your calendars, then that may be an issue? Check out this Apple Support Article to determine and help resolve your problem - good luck!

Thanks for the quick reply! I've iCloud on at my device, but the function 'calendar' is deactivated. However, I've logged with my google acount aswell - and here I've calendar activated at sync. :/ Strange!

Did a reinstall with the whole device, but didn't solve it..