We have updated the WHMCS Module V2, please download the new files and update the module.
You can download the new module from the following link :
This update has the following changes :
1) Added RDNS option for Enduser so that they can manage RDNS from WHMCS.
2) Added support for LXC.
3) Added “Test Connection” while adding Virtualizor server in WHMCS while configuring for API key and pass validation.