Connection lost on my own server

Hi, i'm trying to host a dedicated server of my own but everytime i join, it gives me a connection lost after a few seconds/minutes. In the meanwhile all the other drivers are playing fine in it.

I opened all my routher ports, used my host as DMZ, and reinstalled both server and rf2.
Still getting this problem. Does anyone know why?
 
Is this dedi server using SteamCMD?

Also there is a "Hosting Help" sub-forum in this Tech forum.
 
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