Turnitin experienced issues yesterday. The following is their current status update.
Turnitin and TurnitinUK experienced a service issue between 10:40am- 11:32am PDT / 5:40pm-6:32pm GMT / 4:40am-5:32am AEDT. During this time most users (including ones using our services through an integration) would not have been able to log in, submit papers, or access feedback.
All Turnitin customers on the following services were affected including:
Turnitin (including mobile and Sandbox users)
TurnitinUK (including Sandbox users)
Note that if you wish, you can sign up to service update emails directly.