We have received several reports of the Submit button not working when creating or editing Turnitin assignments. Through testing, we have determined that this error occurs when the post-date is more than two weeks after the due date. We have contacted Turnitin and have asked them to look into this as a matter of urgency.
The error does not appear to affect certain non-Chromium browsers such as Firefox and Safari. If you have access to these, please use them to set up your Turnitin assignments.
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