Hello again Gizmo. Glad to hear it's working, but I would not advise you to use Wwise 2021.1 if you're going through the certification. Or at least not yet. Currently, the certifications are based off Wwise 2019.1, meaning a lot of the content may not look the same as with 2021.1. Instead, I would suggest you download Wwise 2019.1.11 (the newest one with the same look and features) and use that throughout the certification. Pretty much everything you learn there will contribute to your understanding of 2021.1 as well.
Hope it works, otherwise, let us know.