I cannot register my 3d mapper plug-in. Help please

Hi,

I purchase 3D mapper to help me with a project at work. I installed it fine. Then when I restarted photoshop and opened the extension, It asked for the purchase code which I entered. But nothing happened If I click on the arrow and if I clicked “enter” on the code the field resets.

Am I doing something wrong?
Please help me

Is it from Marketplace or Elements?

The marketplace. Envato Market

Check the documentation and contact the item author for support

I guess thats all I can do at this moment. Thanks for the help