windstream email failed login

several months ago Microsoft edge did an update which disabled the email login to windstream. all others computers are ok and login. all other browsers on the affected computer login and are ok. the computer has been checked and passed for virus' and other problems. Repair option for edge has been run. all other email accounts work ok on affected computer in edge. ONLY this computer with Only microsft edge and only with windstream email login is affected. windstrea, says not there problem because other browsers and other devices all wok so is microsoft problem.  When trying to login it gets stuck on  the page I pasted screen shot here.