Why am I unable to open Adobe Digital Editions on Windows 10

I have been using Adobe Digital Editions since i upgraded to Windows 10. The last two days i find that i cannot open ADE.. It "launches" when i click to shortcut, but then when i click on the icon in the task bar nothing happens. I've tried everything i can think of - uninstalled, restarted and reinstalled - did that twice. I even tried ADE3 but i got a message saying that i had to activate my account - but when i went to reactivate the message came that the computer was activated! So i gave up there. Anyone having the same problem. Oh, and I've done a virus check and run Super Anti-Spyware.