question: How to troubleshoot when you can’t activate ExpressVPN
answer: 
  This guide will show you how to resolve sign-in errors when you try to activate your ExpressVPN app.
  
  What error message do you see?
  
  Error message: “Your activation code is incorrect. Please try again or contact Support.”
  Error message: “Please make sure your email address and password are correct.”
  Error message: “Please check your connection then try again.”
  Errors with email sign-in link (Windows app v9.4.0 and above)
  
  Troubleshooting activation code issues
  