I made an application in laravel 5 and need to upload to a server that is not mine, I only have an FTP account for it. The problem is that p server CPanel is configured for PHP 5 and laravel runs on PHP 7. The hosting mentioned above is with EasyApache 3 and to have the PHP Selector Software on CPanel needs EasyApache 4. My question is if I change EasyApache the sites that are already hosted there and run in PHP 5 will no longer work? If I switch to EasyApache 4 is it possible to downgrade afterwards?