XbtitFM 3.1 is already available everywhere, no need to pay :
Source-DB
Mega
anonfiles
Mediafire
file.io
ZippyShare
Edit:
Install it
http://url.com/install.php
Tested with :
PHP 7.4.3
MariaDB 10.4 (with MySQL strict mode disable)
Apache
Ubuntu 21.10
Just enter any serial key you want.