Problem with Windows Live Mail.

I am using window 10 now.  I know that Microsoft no longer supports windows live mail, but I have been using it for many years, and I have a lot of files and saved e-mails on it.  For the past 3 or 4 weeks windows live mail has been having a lot of difficulty recognizing my password.  I know I have not changed anything.  I have reset the password at least twice through my ISP, to try to correct the problem, and it did in fact correct the problem once, for about a 2 week period, but the same problem is occurring again, and I cannot log onto windows live mail, and cannot download any of my daily e-mails, or send any emails out, because once again, it is not recognizing my password.  I have tried to reset it again, but it still does not recognize the password.  All I keep getting a small popup window asking me to log in and put in my password, which by the way, is already there in that small window.  My ISP tried to fix the problem, but cannot. HELP!!!  Has anyone else had this problem, and more importantly, does anyone know of a solution.