Your Hosting Account's PHP version can be changed at any time, in order to do that simply open your Hosting → Manage → PHP Configuration section:
On the newly opened page, you can select the PHP version you wish to use and click on Save:
How to select an older PHP version?
In case your desired PHP version is not displayed, you can click on the Show no longer supported PHP versions button and the full list of all available PHP versions will be shown:
That’s it! Now you know how to change your PHP version 😊