/10 network

Good day. The panel got up like a glove, but there was a problem. The panel is installed behind nat, IP 100.100.100.241/10, Everything is fine, but with this configuration it does NOT open the possibility to configure IP addresses. I add any private IP, the ability to edit appears, and it is turned on in the settings that the panel is behind the nat, but a problem arises, the web server is listening ONLY on this "virtual" address.

Now the question is, how do I get the panel to accept my subnet (/ 10) or how do I make the panel listen on ALL addresses?

all depends on which services do you mean.
If you had configured user accounts with different ip and configured NAT properly then it should be working.