Server Server not showing up in Weekly Mode

[Refex]

In Survival Mode my server is working perfectly. But if I change to weekly mode, it won't be listed in server browser anymore.
Are there some settings potentially preventing it only in weekly mode from being listed? Used normal length, hard mode, Biolapse. Can't tell...

 

[®omano]

Filters? Also for weekly you do not decide the difficulty and length, so yeah, filters?