Site not created after order is approved

NOTE: WHMCS Provisioning is not listed when I want to submit the ticket. So, I choose New Site Generator.

I have WHMCS plugin installed on the website and managed here:

I have setup everything nicely and for testing purposes, I manually ACCEPT the order.

Email confirmation has been received with the subdomain installation:

But when I go to the Network > Sites, it is not setup.

FYI: I'm choosing the below options to install the WHMCS product setup:

== If your Wordpress Install Offers Domain Mapping as well as subdomain/subdirectroy installs ==