Are you getting the message that the password is incorrect, or is there no Password field? In the event there is no Password field please go to Settings on your iPad, select General, Accessibility, turn off Larger text. Then go back to the SlingPlayer application, the password field should be there. If your password is incorrect, on a computer, please go to accounts.slingbox.com to reset it.
Hope this helps!
I am unable to login to sling player on my mini ipad after downloading IOS8 today, and my ipad was restored to factory settings and I also uninstalled sling player and re installed it back and when I go to login, I can enter email, but NOT password. Please help if you can and thanks.