Issues Playing Video or Exam Button not Appearing

You will have to clear your cache on your internet browser.  

Here is a link that explains how to clear your cache in Internet Explorer:https://kb.wisc.edu/page.php?id=15141

Here is a link that explains how to clear your cache in Firefox: https://support.mozilla.org/en-US/kb/how-clear-firefox-cache#w_clear-the-cache

Here is a link that explains how to clear your cache in  Google Chrome:https://support.google.com/chrome/answer/95582?hl=en