When you visit a lab, if you see a page like this:
Cookies are being blocked by your browser and you'll need to configure your browser to allow them for this workshop. First check that you don't have any plugins or extensions that might be blocking them (adblockers, etc). Then ensure the browser settings themselves are set correctly:
Copy and paste chrome://flags/#same-site-by-default-cookies into the address bar of your browser, set "SameSite by default cookies" to "Disabled" and then restart Chrome
Click "Safari", then "Preferences...", then the "Privacy" icon. Ensure that both "Prevent cross-site tracking" and "Block all cookies" are unchecked. Restart Safari.
Copy and paste about:preferences#privacy into a new tab in your browser, and ensure you are using the "Standard" option or another option which does not block third-party cookies.Go back to the homepage