This is likely to be an issue with the Safari browser on a Mac. By default the browser may be blocking third-party cookies, which prevents certain apps like Gradescope from opening.
To get around this issue, you can either:
Turn off the option to prevent cross-site tracking
- In your Safari browser, go to the Settings
- Turn-off ‘Prevent cross-site tracking’ by unticking the box.
Use a different browser
Alternatively use a different browser such as Google Chrome or Microsoft Edge.