I synced with my Macbook and after detaching the cable, the watch is stuck in floors counting page.
If I press the back button, it shows the "Loading maps" page and it's stuck in there.
What to do now? Looking forward to some nerdy knowledge, beyond experience of "normal user", because we all are ready to be hired as DevOps engineers.
Nerdy answer. I have a Fenix 6s Pro and during Covid I had the same problem - probably because I didn’t give the watch the AstraZenica jab. 
Reconnect your watch to your MacBook and in file browser look for the Activities folder. Find the .fit file with the latest date, copy this somewhere temporary if you wish to keep it, but then delete it from the Activities folder.
disconnect, do a hard shutdown- hold for 20 secs, then restart. This worked for me: the reason was that .fit file was corrupted so it wouldn’t finish loading.
