The XVM Team disabled the filters, as a fix to the blank filters page. (Caused by the new Football tank filter that WG added, most likely.)
The XVM Team needs to fix it, and re-enable it, before it'll be working again, for anyone. There's no workaround.
"+#FIXME: TODO: Fix our version and turn it on back"
https://bitbucket.org/XVM/xvm/commits/1c881440958641c911d0af8b198384aa59910739