new owner -- Not Getting Sleep Tracking or current HR on GC

I did search of forum but saw nothing recent -- at least not since FW 14.0

1. Anyone else have this issue?

2. My guess is if I call G support they will first say do a reset, right?

3. Dumb question -- if I do a reset, do I have to re-sync my sensors/ headphones?

4. (unrelated) question -- has anyone seen the F6 screen and compared to F5+? Is it MUCH better? I have older eyes and am wondering if I should have taken the plunge and got the better resolution F6...

TIA,

T