EMAIL ..Wrong Password & Server Block
A device that fails multiple logins, causes the server to block the IP as a security feature, limiting hacking attempts.
It is important to make sure all devices have correct login info and have solid internet connection. Poor internet may cause slow or poor transfer of login date, resulting in a block.
It is recommend that devices limit auto email checks to 15 minutes or longer. One can click Get Mail or Inbox at any time for an email check.
One can check IP with this search: https://www.google.com/search?q=what+is+my+IP+address