Send an email to support. As that is one of the “official” apps, and should work then in the new app. It must need to have a few lines of code added, and would work flawlessly. But looking at the last updates, it hasn’t really been updated for the STSC app.
The Timed Session capability is something what I haven’t seen anywhere before. But the old documentation lists it, but not the new. They probably hasn’t released any standard UX tile for it yet.