had the exact same problem as the first post on 27/4. I contacted the help desk at roll20 and within 2 days I could get back into roll20 through OBS.
Today, however, when I have tried to get in to roll20 through OBS again it asks to verify I human: OK. It asks for my email and password: OK I get 2 green ticks. Then it doesn't let me into roll20 and tells me to get in touch with the help desk again.
Before giving any facile advice; I have tried to get in through Google and Firefox and have cleared my cache and cookies, but the same problem. I have 0 problem getting into roll20 through a browser. The problem I have is getting in through OBS.
I made a help request to roll20 and gave them a screenshot. They replied giving the usual advice of cache and cookies and sending me the link to roll20 even though I told them my problem isn't getting into roll20 through a web browser. They finished the letter telling me they may not be able to help.
Any proper advice would be most welcome, as I can't stream my games until this is resolved.
Dak.