question: ‘Can’t access ExpressVPN Keys’ error
answer: 
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  ExpressVPN Keys Chrome extension:
  
  If you see the “Can’t access ExpressVPN Keys” error, follow these steps to report the issue:
  
  On the error screen, click the Save Diagnostics button.
  Send the downloaded file to the ExpressVPN Support Team via Live Chat.
  
  After that, follow these steps in this order and check if the issue is resolved after each step:
  