Our prestashop webshop is being moved to a new server. Everything is set up (except store URL is messed up) The `index.php` script just doesn't get executed. It downloads as a file called "download" in my browser. That's strange, because **I can execute php** from the same place, for example the webserver came with a basic file containing phpinfo output, with definately runs from the same folder. Permissions are OK.

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> Additional details (maybe important): For users to be able to purchase items while the process is done, the DNS records will be updated as soon as everything's ready. Till it's done I can't issue an SSL certificate, because the CA checks if the domain resolves to my ip. I don't wanna mess with self-signed either. So the store domain resolves to the new ip but only according to my local hosts file, and the store protocol is set to https, which is not right, but I haven't found a way to change it without the admin dashboard. It's running on a LEMP stack with PHP7, PHP FPM.
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