There are 3 situations in which this problem occurs.
This setting validates IP addresses for cookie-based logins. This denies attackers the ability to capture cPanel session cookies in order to gain access to your cPanel & WHM interfaces.
In order to provide you with maximum security, on our platform, cookie IP validation is set to strict — The system requires that the access IP address and the cookie IP address match exactly.
Otherwise, it will log you out automatically, and you will see the error “Your IP has changed. Please log in again“.
Usually, re-login to cPanel will succeed. But, to fix this permanently, you must ensure that the IP address remains static.
In order to fix this permanently, please explore the below options :
As we discussed, some ISPs constantly change IP addresses. As a result, users must enter the credentials every time to access cPanel.
You can take advantage of Opera’s free VPN, which will provide you with a static IP that doesn’t change frequently. Their free, built-in VPN requires no subscription, payment, or additional extensions.
The first step is to download Opera and to install it.
To activate the free VPN for the first time, enable it in Menu -> Settings -> Privacy -> VPN. From now on you will see an icon on the address bar showing VPN status. Simply click on it to trigger VPN service on and off. You can then select your desired virtual location and also see stats on the data used.