Screenful FAQ

Try different browser profile and/or private browsing

If you have multiple user profiles in your web browser, try logging in to Trello using a different browser profile. If that doesn’t help, try logging in to Trello with the browser in private/incognito mode. 

Related questions

Check your internet connection
Reload the page
Try reauthorising the Power-Up
Disable browser extensions
Make sure you are using supported software
Clear your web browser's cache
Check for console log errors and send them to us