You can look for someone in phpbb forum itself. they do have marketplace there. PHPbb somehow isn't so customizable. My suggestion is mybb, its much easy and there are lots of plugins to it that you can installe. I do own a forum years ago, I somehow earn good from it through ads bu something happen and sold it.
thanks for letting me know, problem is the phpbb forum don't like bitcoins lol, its why I am asking here, I am looking for this because I started this forum years ago and you cant move the user database from one setup to another, or I would have done this in a shot, I am realizing now how bad addons and custom work does not work well on phpbb :-/
tho as I am unpopular I am also considering building a new site, start anew, but I would need some help :-o
I have installed phpbb3 forum for some of my customers, I can help you to start your new site. Send me a PM with your telegram or email, we can discuss further