After reading this post I'm facing a similar scenario (also discussed here) regarding migrating my app to short-lived tokens.
To my understanding, all existing long-lived tokens will still work, even after Sep. 30 but the option to create new ones will be disabled.
Does that mean that all existing offline access apps will still work using both old tokens and old authorization implementation? Does it also mean that existing users will not be affected by this transition at all?
Thanks in advance!