Can I use this system if I'm not an Envato Author?

All Envato related features are not present by default. They are added by the system automatically when you enter your Envato API key in settings.

So buttons like 'Import from Envato' on the Categories page, 'Login Using Envato' on index and login page, 'Request purchase code' and 'Supported section' in ticket page are only available when you have entered Envato API keys in settings.

Regards,

Team Auxilium