Download the Turnitin app from the Apple App Store
You do not log into the Turnitin app
The username & password prompt shown when you open the Turnitin app is not your Aston username. You need to give the app permission to read assignments in each module.
You can only do this after work has been submitted to the assignment.
The easiest way to do this is to open a browser on your iPad, go to the assignment via Blackboard, open a piece of work, click the information button, and follow the steps to link the module ‘Access this class in your Feedback Studio for iOS app.’
Full steps are available on Turnitin’s support site. See the section named ‘Accessing the Turnitin Viewer on an iOS device’.