Connectivity problems after upgrade to 14.36

Hi all,
I've got a serious connectivity problem (looks like) after the upgrade to 14.36.
No WiFi network  recognition at all and no bluetooth connection possible (tested on several different devices).
Removed all former connections on iphone and in Garmin app, a lot of restarts (watch and smartphone), watch resets (incl removing all activities etc) nothing helps.

Everything else looks fine.

Somebody with the same issue?

Grtz, Hans