To watch the video in high quality, make sure the setting says 1080p
There is a button in the bottom right corner of the video that makes the video full screen
View Captions on Videos:
Window PC and Android phone: Click on CC > Display Captions
Mac PC, iPads: Click on CC > Display Captions
iPhone: Click on “V” or “Vimeo” in bottom right of video. Then, you must make the video full screen (four arrows icon), click on ellipses, then subtitles and English or Closed Caption.