Updated email address now cannot see documents.

I updated the email address on my Creative Cloud account. When logging in with the new address I realised it was an address I've previously used with a Photography plan. I could see the Photography plan documents but not my CC documents.

I found another thread on here from someone in a similar situation suggesting changing the email on the Photography plan to another to free up the original then try logging in again with the original email address. I've tried that but it's now saying that an account with that email address doesn't exist. I now have no idea how to access the original CC account to access documents. Please help.