Spy Server directory suddenly shows that my server isn't reachable #RTL #spyserver

RadioZombieCH
 

Yeah, thats the issue. But it's reachable. I tried connecting to my server with another pc, which is connected to my neighbours wifi (other ip), and it suprisingly worked. The SDR Console V3 Server also works and shows that my server is reachable.
The ports are forwarded and turning off the firewall doesn't fix the problem. It worked flawlessly some days ago. So why is that happening?

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