Garmin Express sync on Mac broken

Hi, I recently wanted to update and sync my wife's 265 and got sync errors. She has a MacBook Pro with latest Apple OS. I did not find a solution and gave up after I tried reinstalling and other watches like my 965.

No i was trying to sync my 965 with my MacBook Air 15" M1 and what to say, the same happens here.

So I tried my Edge 1040 and surprise surprise, it worked!

So I tried my 965 again and it did not.

I also changed the cable!