Lost/Wrong CloudLibrary ADE login

I have been busily been using ADE for my ebooks for many, many years and today went to install the app on my iphone. Turns out I don't use my current adobe id to authorize books on my mac desktop but instead use CloudLibrary. I finally figured out the CloudLibrary vendor id by trial and error and can deauthorize my desktop ADE (although I haven't completed that particular action out of fear) but when I use that login to try and authorize the iphone app it rejects the login. I have tried Adobe ID, CloudLibrary and CloudLibrarySC to no avail.

Any ideas?