This one was bothering me for some reason. When you select the product type in your WHMCS Products/Services as Server/VPS it adds this NS1 and NS2 requirement. Which are just nameservers, it makes no sense! So if you change it from Server/VPS to OTHER the option goes away. If you have modules and other configurable options enabled, they’re all still there and work. Seems silly, but I reached out to WHMCS to ask why it exists in the first place.
Do know, this removes the hostname as well. If you want to keep hostname, you have the ability to hide NS1 and NS2 prefix’s and prepulate them instead. You would leave your Product/Service as Server/VPS and then make these changes:
The fields can be hidden by editing the /templates/orderforms/your_active_template/configureproduct.tpl file.
To remove one or more of the default fields on your order form entirely, you can change the field type to hidden and supply a unique value.
For example:
Find:
<label for="inputNs1prefix">{$LANG.serverns1prefix}</label>
<input type="text" name="ns1prefix" class="form-control" id="inputNs1prefix" value="{$server.ns1prefix}" placeholder="ns1">
<label for="inputNs2prefix">{$LANG.serverns2prefix}</label>
<input type="text" name="ns2prefix" class="form-control" id="inputNs2prefix" value="{$server.ns2prefix}" placeholder="ns2">
Replace with:
<!-- <label for="inputNs1prefix">{$LANG.serverns1prefix}</label> -->
<input type="hidden" name="ns1prefix" class="form-control" id="inputNs1prefix" value="host{$smarty.now}" placeholder="ns1">
<!-- <label for="inputNs2prefix">{$LANG.serverns2prefix}</label> -->
<input type="hidden" name="ns2prefix" class="form-control" id="inputNs2prefix" value="host{$smarty.now}" placeholder="ns2">
It is recommended to create your own custom order form to preserve changes through any upgrades – http://docs.whmcs.com/Order_Form_Templates#Creating_a_Custom_Order_Form_Template
Hopefully this helps someone, enjoy!