Manual cancellation of the PHP Extended Support is not required.
The Extended Support will automatically end as soon as you switch to a supported PHP version.
You can find the instructions for adjusting the PHP version here:
Adjust PHP Version
This currently applies to PHP versions from PHP 8.2 onward. Once you use a newer version, the Extended Support will automatically be deactivated at midnight.
Note: No refund will be issued for days already used.
You will receive a confirmation email once the Extended Support has been deactivated.
To end the Extended Support, change your PHP version: Change PHP Version and Configuration