hello guys I need help to add my server an operating system centos 7, and opengamepanel, I could not add my server I have disabled my firewalld and add the ip to the whitelist, what else can I do?

This is why we have a Guides & FAQs section.

See: My server will not add or shows as down, what should I do?

And: GameTracker scanner IP addresses

The operating system will be irrelevant to Gametracker.
Gametracker interfaces with the game API only.

that guide does not help me at all, some other solution?

oswaldo15963 wrote:
that guide does not help me at all, some other solution?

You can provide us with the game type, IP/PORT and query port of the server in question.

Just for posterity, that guide does help, and i surely hope that you've read all of the content and complied with the advice.

Had the same issue. It is firewall. Please try to disable it, sudo service firewalld stop.

hola
como deshabilito mi firewalld ?

matiasfabianburg3838 wrote:
hola
como deshabilito mi firewalld ?

That depends entirely on your operating system and / or router (if hosting from home).
Refer to your operating system and / or router manual for guidance.

We do not recommend disabling your firewall except for testing purpose. The firewall should be configured to work correctly with GameTracker scanner IP addresses