

Do your issues appear on a fresh install? At my admittedly limited level of expertise, I’d probably start from there. If a clean install works properly, then something that’s happening later is messing it up. You’d have to keep track of changes you make to your system and check for issues as you go.
If a clean install is borked from the get-go, maybe try different distros. Since Framework supports Fedora, I’m surprised that anything would go wrong.
I don’t know if Framework offers any support or warranty, but you could check with them too.
I remember hearing that you can’t solder batteries normally though and that a special technique is needed to heat them minimally. Is this true?