Issue

When configuring Products in WHMCS, you have 2 options available:

1. Provide credentials on order placement.
2. Receive an activation email.

If the first option is selected, a form in online store is displayed.

There is a known issue in WHMCS 7.2 (#CORE-11375) that this form is not shown.

Solution

Use one of these workarounds:

1. Use the Send activation email option.

2. Configure the form as described below:
Limitation: the form will always be shown in EN localization.