The "Mark Complete" button at the end of a tutorial lesson is not working

There is a "Mark Complete" button at the end of each tutorial lesson. When you click it, that lesson should be marked "complete" for you and the next lesson should load automatically (this can take a few seconds). If nothing at all happens when you click the button, please do the following:

  1. Contact us to let us know what happened. Include the name of the tutorial, the lesson number, and a screenshot of the last page (if possible). We will manually mark the lesson "complete" for you so that you do not need to complete it again.
  2. Log out of our site, clear your browser's cache (see https://www.lifewire.com/how-to-clear-cache-2617980 for instructions), and then log back in. This should fix the problem with your browser's cache or cookies that likely caused the problem in the first place.
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