For WHMCS, the system requirements are as follows: System Requirements - WHMCS Documentation
For KeyHelp, the system requirements can be found here: https://www.keyhelp.de/#install
Our module has the following system requirements:
- WHMCS version 8.1 and above
- KeyHelp Server version 22.0 and above
- PHP version 7.2 – 8.1
- Ioncube Loaders version 10.4.5 and above
