BTH Relay isn't working anymore

The BTH WireGuard relay has stopped working on my iPhone. BTH now only works if I open/forward the WireGuard port directly to my MikroTik router.

I've tested this on both Wi-Fi and mobile data, with the same result.

I've only been able to get BTH working by forwarding the public WireGuard port to the MikroTik. This seems to indicate that the relay connection is no longer working properly.

Has anyone experienced the same issue or knows how to troubleshoot the BTH relay connection?

According to the MikroTik documentation, BTH should use the MikroTik relay when the router is not directly reachable from the Internet.

It says:
VPN Relay IPv4 Status: reachable directly (region: USA1 ip: 192.73.220.99 rtt: 130.382ms)

Same here, a complete outage for us:

grafik

If I look at the status, no wonder it does not work:

https://mikrotikstat.us/

Any statement form Tik?