Apple Watch message: "Sign Into Complete Purchase" My Apple Watch 4 keeps showing this message asking for an Apple Id authentication that is my email but not my apple id really.


  Sign Into Complete Purchase
  
  Enter the password for you Apple ID "email@example.com".


I did a lot of research already of what it could be trying to do and no luck.
Here is the fix! 


Open your Apple Watch app on your phone and go to “My Watch”
Go to Settings/General &amp; turn off Automatic App Install. 
Now go back to “My Watch” and scroll to the bottom to see “Available Apps”.
Any apps you see that are trying to install are the culprits causing the notifications!
Delete those apps from your phone, and if necessary reinstall them with your Apple ID used currently.  
Turn Automatic App Install back on if necessary. 


You now won't receive any more of those annoying notifications!