I doubt it was a real wallet - most likely it was just a scam exchange that would prompt you to send cryptocurrency “for verification” before you could try to withdraw them.
The idea was already exploited on prnt.sc, where it is possible to try bruteforce screenshot ID and find other users public screenshots - https://splashdot.github.io/scam1/

Hey, could you provide more details about setup? Are you using ansible or docker? Using any other reverse proxy?

Well, probably, but considering that sh.itjust.works was targeted by bots, i suspect that it is slow not only because of the users

You can always switch to different, smaller instance (all posts and comments are available on all lemmy instances), but i’m not sure if there is any easy tool to transfer your subscribed communities