Adobe digital edition

This app sucks. I need this app to use books for me MSN. Only had app for a few days. At first app was working but now wont go pass authorization. I made an account and it was working fine. Then yesterday when went to sign in via authorization page, it kept renewing as if I didnt put in any information. But when I put in the incorrect passwords it picked up that they did not match account. Is there another app to use to open acsm files?