I bought all through tfdiDesigns. I'm not really sure of the SQL and PHP version, but I believe the phpvms is 5.5x.
I just tried using default and nothing.
I have no idea why I can't add aircraft to phpvms. Using ElaSkin 2018. I was able to add airports. Downloaded .csv aircraft and tried uploading and didn't work. Is there anyone that could go in and take a look?