Agreed, a factory reset could potentially be a ‘bad’ thing. But (2) makes sense to me. 

I’d probably try that update first. Then I’d review the wifi interference FAQ, since not all interference is related to strength of the signal.id also try a network refresh, by powering off all Sonos devices, and rebooting the router, waiting a couple of minutes for the router to settle down before plugging back in the Sonos. Note, however, that ‘close’ is almost as bad, or potentially worse than too far. 

In case you need it, there is the manage your account FAQ. 

How can I reach someone at Sonos to determine what account my Connect device is registered to?   I saw some replies from Sonos on this board suggesting that Sonos can determine what the registration account is and perhaps change it from information about the Connect.   I ended up getting nothing but bot responses on the chat feature.   I really don’t want to sit on hold on a call if I can avoid it.

There’s no way, other than direct messaging a moderator here on the forum, and waiting for a response, which will likely be after they do their moderation duties. Your best bet is to call in, and sit on hold, if necessary. Depending on how many others are waiting, it could be quick, or even immediate. On the other hand, we are just after a holiday, which means not only the possibility of some CS folks taking time off, but call volumes might be up, from new users seeking help.

Unfortunately, there really is no way a non-Sonos employee can give you an answer, although if memory serves, some of that data is shown in the client when attempting the process, just not all of it.