Twitter has changed how developers can interact with user's accounts, and as a result some users may experience some issues with Twitter panel on My Dashboard.
We're pleased to let you know that the issue has now been fixed in the latest update V.1.5.2. so please download the new update and add your Twitter account(s) in the Settings of your iOS device.
For those who have yet to update, as a temporary fix, you can add a Custom panel where we have added Twitter web version as an option. Logging into this will allow you to continue using Twitter in the application until you update to the latest version of My Dashboard.
Hope this helps,