You may just need to clear your cache. If you have not been consistently using Incognito mode, then you have built up a cache that will carry over when you are in Incognito mode.
Here are instructions for clearing cache on most browsers:
How to Clear Your Cache on Any Browser | PCMag
I just ran MyST, went to a unit, and opened Training Manager without issue. So that would be my first suggestion. If that doesn’t do the trick, let your Council support staff know of your issue, your MyST username and BSA ID number and they can submit a ticket to National.
