If you have purchased Gigapixel but you are still seeing notifications about the application being in trial mode
1. Sync your ownership with Help -> Update Ownership
2. Try logging in again by going to Community -> Switch Users to pull up the login page
3. Check your account. You should be able to see your copy of Gigapixel AI on the https://topazlabs.com/my-account/downloads/ page.
If you don't see your copy of Gigapixel AI in your account, it is possible that you purchased Gigapixel with another email address.