I wonder what the issue is, and why they have "blocked" your account?

If I were you I'd be making some phone calls to Pearson.

Whichever exam you are looking to take, it would have to tie in with your VMware myLearn account for your recertification, perhaps get in touch with the Certification group at VMware? I don't have a phone number for them, but certification@vmware.com is their email.