Product Portal blank
If you're on mac, and your Product Portal is looking blank, check out this article!
iZotope products can be easily authorized via Product Portal. You can see full authorization methods broken down for them in this article.
Exponential Audio products have a separate authorrization process through iLok, this can be seen in this article.
Most of the products sold by iZotope are not Standalone applications. These require a host application to run. Be sure to check individual product specification pages for compatibility, you can see DAW-specific setup steps in this section.