using latest version from fdroid, all my settings correct for example wireguard app on phone working but wireguard proxy on rethink not working. actually it worked once somehow but it got broken again. it usually says failing, waiting, when it says connected it still doesn't work.
still best firewall for android tho big respect to developers
Remove IPv6 from Peer Endpoint, if present and see if WireGuard then works? If so, you're likely hitting #1483 (which we will release a fix in a day or so).
using latest version from fdroid, all my settings correct for example wireguard app on phone working but wireguard proxy on rethink not working. actually it worked once somehow but it got broken again. it usually says failing, waiting, when it says connected it still doesn't work. still best firewall for android tho big respect to developers