[Maxximou5]

It's - for ip and + for net_public_adr.
https://developer.valvesoftware.com/...dicated_Server

-ip 0.0.0.0 +net_public_adr 89.35.52.89

Not sure of your network setup, but you can do 0.0.0.0, or assign ip with 89.35.52.89 and remove net_public_adr.