WHMCS plugin error

Hi,

I succeccully install this modul on both side (whmcs / i-mscp), but when I want to create a new domain on my server, I get the following error message from WHMCS:

Quote from whmcs

Module Command Error
Could not connect to server (:); 0 - Failed to parse address ":"

In system activity log are:

Module Create Failed - Service ID: 1 - Error: Could not connect to server (:); 0 - Failed to parse address ":"

When Itest the connection all seems to be ok, I can log into i-mscp from WHMCS.
I set the exact hosting plan name on WHMCS.

WHMCS version: 7.0.1
i-MSCP version: 1.3.3
i-MSCP WHMCS plugin version: 1.0.1

Quote from Nuxwin

@Dylan

Please do a screenshot of your i-MSCP Hosting server configuration page (WHMCS side) with your current settings (excepted the password) and show us.

@Nuxwin File attached

Edit:
Ehm ok, sorry it's my fault.... I'm not set nameserver's IP addresses....