De-authorize adobe ID: No access to email and password forgotten

Well, I have a great problem...

1. I have a new computer - Mac Book Pro and now have the following problems accessing Adobe Digital Edition

2. My ADE is authorized to my old email address, I do NOT have access to it and forgotten the password

3. I cannot authorize my NEW adobe ID as the option in ADE is shaded out

I tried a chat with customer service, apparently they are not IT trained. I did try the following

1. de-authorize old account - cannot as password not working

2. deleted and re-installed ADE, not working stays with old account

3. authorize computer with new details - not working as option is not enabled.

So any clever ideas?