Safari has a feature called “Prevent cross-site tracking.” This feature prevents LMS' from being able to connect to Edpuzzle and can generate multiple errors such as not being able to sign in.
If you're using Safari on Mac:
- Open Safari.
- From the top bar, click on "Safari" and then on "Preferences..."
- In the new window, go the "Privacy" tab.
- Uncheck the "Prevent cross-site tracking" option.
- Log out of your LMS and close Safari.
- Open Safari again and log in to your LMS.