I have installed Catalina and the Reminder does not work properly

My Reminder are a total mess after installing Catalina in my iPhoneX.

It keeps goin to 0 reminders all the time, and when the reminders are coming back they have all changed to the old ones - the one I have deleted and changed are back to the original - and the new ones are not there

I have tried several times to make the changes and it lastet for some days now, but suddenly today - all my reminders are gone again and now all my lists are with 0 reminders.

This is so frustrating - I cant´keep doing this over and over again.

Is this a bug with Catalina? Does anyone else have this problem.

When i upgrading all my reminders where gone and I found it was because it didn´t sincronize with icloud - but after I sincronized its all a mess.