Our application (Glympse) has been using xAuth for several years. We were approved to keep using xAuth when the transition to OAuth was underway. We haven’t touched anything related to Twitter in months.
Starting today, we have been getting reports of users getting a “Client application is not permitted to use xAuth” error when signing in. I can reproduce this with our Android and iPhone clients. In searching around, I see some talk about similar errors in other apps starting recently.
Did some xAuth permissions get stepped on? Can someone at twitter restore our right to use xAuth? It is blocking all our customers from using Twitter.