To reproduce:
Create an access_token using the OAuth2 flow, create a broadcast ( create_broadcast periscope API)
it works.
Now open Periscope in a browser (logged in with the same user, can be a totally different device) and logout.
create_broadcast returns “Unauthorized”.
I assume the access token gets revoked on logout ? Am I missing something ?
At this time we don’t provide support for the Periscope API via these forums. You should be able to raise this issue with the team at Periscope directly per the documentation you would have been sent when access was granted to the API.