On Microsoft Windows;
Open a command prompt (super+r, then type "cmd" and press enter)
ipconfig /release
ipconfig /renew
Sign out of cPanel.
Sign back into cPanel.
Try it again.
If this doesn't work, or you're using a different OS, do as @PCTipsGR suggested (I use Windscribe free VPN)
You can download it from their official website. If you're using Debian/Ubuntu it can be installed from apt (forgot the package name lol) or, on Arch, through the AUR (windscribe-cli)