Hello Stefano,
Thank you for your question about signing up. It has taken some investigating, but here's what we see on our side.
Please clarify: When you say "changed my eBay userID," do you mean that you renamed an existing one, or started a new one?
The issue seems to be that the accounts use the same email address, and you might be trying to recover your account password, but cannot.
Please let us know on the answer above, and we can take the next step.
bidslammer
