I have ‘lone aFib’ where i get episodes every few months or years, and the aFib history setting is basically useless - it’s always under 2% of the time so nothing is reported. If you have more frequent episodes i could see it being useful though.

A newly purchased watch shouldn’t have 84% battery capacity, refurb or not. Return.

Ma’am, this is a Wendy’s.

Unless you have WiFi 6e (not WiFi 6) access point(s) it won’t make a difference

Why not just use your personal device to take photos of the document in question?

I’m a fan of the AutoSleep app.

Search for screen time in the settings