vaultboy but i thought that he wasn't comfortable with english.
I can understand your concerns, but neglecting our rules and thereby undermining the basics of this community cannot be the answer.
By the way, @GUSTAVOdfgffg, here is a very good (and also free) translation service that I can wholeheartedly recommend:
https://www.deepl.com
The automatic translation provided for your original question:
I can't see the users that join the forum, I'd like to know how I can see the users list and I'd also like to know how I can put the background image in the header like in this forum https://forum.phenomlab.com/ I don't understand almost anything about codes so if you can help me.
I made my forum on https://www.freeflarum.com/
... comes very close to [deleted]'s version so that you can safely rely on that service. Likewise you can translate answers back to your language.