fail to authorize device

I have my ADOBE ID & Password, while I was downloading digital edition, asking to enter password. When I give my adobe ID & password some time later I recieve a message "failed to authorize device [e_adept_unknown http://adeactive.adobe.com/adept/sign in direct]

My device Moto E, Software Android 4.4.1

Kindly do the needful

Thanks

Goutam