Server banned again

I am running a AC server and it was banned. The ban was removed. For a couple of weeks it was working fine. Now my server is not listed anymore. Is it banned again?
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No, it isn't, I see, that it registered many times in MS, recently about 45 min ago, but I can't connect to it manually.
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Thanks for checking! I could have tried connecting manually myself of course... I will try to find out what the problem can be.

I found somehow the port forwarding settings in the router were gone...
Everything is working now.
Sorry for your inconvenience.
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