Turnitin have advised UK customers that the issue affecting grading via the Turnitin app yesterday (https://vleservice.wordpress.com/2016/02/29/turnitin-grader-issue/) is now resolved.
Turnitin Product Support apologize for any inconvenience this may have caused.
e-Learning (VLES) Team
The Central VLE Team have put out the following message about problems currently being experienced with the Turnitin Grader app on iPads.
We are experiencing an issue with the Turnitin app for iPad.
Users attempting to connect an assignment to the App via a Class Access Code may experience an error, preventing the connection.
Users attempting to sync back grades to the servers from the App will likely experience errors.
Turnitin have informed us that offline grading is safe at this point, and you will be able to sync back your grading work to the server when the issue causing this problem is resolved.
However, as a temporary workaround, we advise you use the Turnitin Grademark functionality linked to the VLE on your desktop computer until we can advise you otherwise.