Get an error on licens ley

Envato Customers Purchases and Subscriptions
1

I just bought Product Designer for PHP Standalone | Lumise
When I enter the Item Purchase Code i get an error

Best regards
Weitling

2

Hi,

Please check documentation hope you will get help there. Otherwise Contact your purchased plugin Author. Contact Author and let them know. plugin Author will be happy to assist you.

Thanks

3

Hi I did but the code dosent work

4

what error are you getting?