I’m having the same issue. I’m wondering if it has to do with token limits on apps. (100,000 for clients, potentially 1,000,000 for everyone else?) My app currently has over 1,000,000 tokens… so I have reached out to twitter to determine if that is causing the issue. Do you have any idea how many total tokens you’re app is using? Would be helpful if we could expire old tokens (30,60,90 day expiration dates?)