Btw, tested the above you posted and does not seem to work at my end, can you provide some working samples instead??????????? Since you are the developer it would take you pretty much a few seconds to post a sample that works…
And also post how to do this here with the premium package i bought:
Auto licensing system – this feature will help you to protect your script using a license key. After buy a package member will need to generate license key to use the package. All you need to do is to include a file “license.php” with your script. more detailed help included with package
Discount Option
User roles setup – you can manage who will be asked for price or not based on different user roles
Multilevel Price – You can setup diff type of price for diff type of license like multi-domain or single domain
Multi-domain license management option
I seems to be missing most of the settings for that part above..