My player name is Vavoom also, I haven't played UT2004 in a long time and have been playing on this server for the last month or so.
I downloaded UT2004 from Archive.org because I can't find my old disc. Everything is working great except I can't mapvote, it just goes back to the change player screen. Any idea how to fix it?
Welcome!
I can't think what could cause that. If you send me a copy of your system/ut2004.log on discord I could have a quick look to see if there's anything obvious there. You can ping me on https://discordapp.com/channels/@ukpiglet/USERID/
There's a line in ut2004.ini in the [Core.System] section which you could try commenting out or temporarily removing: "Suppress=MapVoteDebug" - that will enable some logging to your ut2004.log - but that's more around the mechanics of map voting rather than the screen itself.