You’re using a Mac, and your default PDF viewer isn’t Adobe Acrobat Reader. Macs use an application called Preview by default, which may not work 100% with all PDF files. If your Mac opens the PDF on Preview, follow these steps to open your PDF in Adobe Acrobat Reader instead:

  1. Make sure you have the latest version of Adobe Acrobat Reader installed
  2. Highlight the PDF you want to open
  3. Go to “File” at the top of your screen
  4. Choose “Open With”
  5. Select “Adobe Acrobat Reader”