Good news.  Raxxy may have a permanent (ok a semi-permanent) solution.  

Raxxy was the guy providing the servers and builds before Epic asked him to stop.

https://forums.unrealtournament.com/showthread.php?11401-Non-Epic-Playtest-Feedback

Follow the link posted in that thread (https://ut.rushbase.net/rush/UTLauncher)

I'm still at work and haven't tried it yet,  so ymmv.

Also, you need the latest build for this to work, so read the other thread.