Most likely your host is using the .htaccess to define the PHP version to use.
To avoid having these kind of problems, you should use your host control panel and set the PHP version. Then take a look at the .htaccess file, there would be a section with some markers (usually they add it at the end of the file), with some warnings (ie "do not edit", "automatically added" etc).
You have to select those lines and copy them inside the Htaccess Maker, in the field "Custom rules at the bottom of the file". In this way those required lines will be always added by Admin Tools to the file, avoiding the issue of breaking your website.
Davide Tampellini
Developer and Support Staff
🇮🇹Italian: native 🇬🇧English: good • 🕐 My time zone is Europe / Rome (UTC +1)
Please keep in mind my timezone and cultural differences when reading my replies. Thank you!