I just received my 955 and tried to pair it / connect it to GCM. The phone is a Samsung A52s 5G, never had any issues with my F6. 955 FW is 12.29.
I activate pairing mode on watch, the watch shows that it waits for the connection to phone. In GCM I go to connect device, choose 955. The phone shows that a connection to 955 is possible and that a 6 digit code will be displayed on the watch, I chose "connect". GCM then either crashes or just returns to the devices overview screen. Nothing was displayed on watch display, it still shows that it's in pairing mode. I've never seen a code when I try to connect in GCM. If I pair the device in Android BT settings, watch shows a code and I can confirm it in Android. Android shows the 955 as paired and tells me then that I've to configure it in an app. If I then try to connect in GCM it still does not work, it's still displayed that when I hit connect a code will be displayed and it either crashes or returns to the devices overview.
I rebooted phone and watch, I uninstalled GCM and cleared data and cache. I factory resetted the watch 2 times.
Okay, I heard that 955 is buggy, but even pairing broken? I've no idea what to do other than update firmware on 955, but in case I want to return it, this might be not the best idea.