Venu 4 calling functionality not working IOS

I migrated from Garmin venu 2 plus to Venu 4 and now I can not use the calling functionality anymore.

If I get a phone call I can answer but they do not hear anything.

I can record voice memos => Mic is operational

I can listen to spotify => Speaker is operational

I can answer, transfer calls, hang up, I can hear the other person, they can not hear me. => Mic is not working when in calling. Mute and unmute on watch make no difference. (Maybe mute even if it not?) 

Iphone air, new IOS: 26.0.1

Garmin app: 5.18.0.9

Program version venu 4: 14.12 DFU-026599

You have my permission to contact me directly via DM or mail if that can help solve the issue faster.