If you want to add or remove PHP extensions, you can follow these steps:
- Log in to your control panel (cPanel) and look for the section that says Select PHP version.
- Within the interface that will appear, in addition to being able to change the PHP version, you can mark or unmark the PHP extensions that you want to activate / deactivate (in some cases it is necessary after marking / unmarking, press the save button, although in recent versions of cPanel is not required).
If the extension is not available, try changing the PHP version to see if it appears. In case you don't Contact support.