Strength Band University was the original Bodylastics exercise library and access to the site used to require a login. This login was included on a printed certificate inside older systems of Bodylastics.
Strength Band University is no longer in operation and was merged into the main Bodylastics many years ago and you do not require a login to access the content.
To access the exercises, click the "Exercises" link in the Bodylastics menu and then Stackable Resistance Bands and you will be able to access all of the resistance band exercises by muscle group. You can find that page here: https://bodylastics.com/pages/stackable-band-exercises
Strength Band University was a library of exercises with written and photo instructions. When it was merged into Bodylastics there were many more exercises added. There are currently over 100 individual exercises on the site.