Tech glitch in login credentials causing Yahoo mail down? Get to customer care.
Login problem can lead to Yahoo mail down issue. Therefore, it becomes necessary to use the help that is provided by the tech support sites or dial the support number to connect with the tech rep and get the troubleshooting solutions. In addition to that, you can always take a quick look at some Youtube tech vids that’ll assist you in removing the error.
  https://www.apple-supportphonenumber.com/yahoo-customer-support-number/