Many forums keep IP addresses for checking some users, which is normal since administrators are responsible for security on the platform. If you want to change your IP address or save one from which you want to log in constantly, you can contact
router-network.com [router-network.com] . They have step-by-step instructions on how to do it, and it took me no more than a few minutes. When I had a problem with changing the address, they helped me there and showed me very clearly how I could solve my problem myself and not pay for the use of some expensive VPN applications.