V4 Bug - No account exists with the provided key

I just upgraded to Version 4.04, and in the process bought a Professional License and applied it in the LetsEncrypt App. Now, everytime I request a new certificate, I get the error “No account exists with the provided key”. I don’t know how to fix it and I need to make a site live for a client! Here’s more of the error message:

Request failed - One or more errors occurred. System.AggregateException: One or more errors occurred. —> Certes.AcmeRequestException: Fail to load resource from ‘https://acme-v02.api.letsencrypt.org/acme/new-acct’.
urn:ietf:params:acme:error:accountDoesNotExist: No account exists with the provided key
at Certes.Acme.IAcmeHttpClientExtensions.d__0`1.MoveNext()

Hi David, thanks for raising this, I have to replied to your email as well.

As part of our 4.x upgrade we migrate your account setting and in your case that seems to have failed for some reason (possibly the registration step against the Let’s Encrypt API failed). As noted in my email please try going to Settings and entering in a new (or the same) contact email which should update your account key.

That fixed the problem! Thanks for your help.

Hi,

Please can you say how to fix this problem? I have the same problem.
Fail to load resource from ‘https://acme-staging-v02.api.letsencrypt.org/acme/new-acct’.
urn:ietf:params:acme:error:accountDoesNotExist: No account exists with the provided key

See reply: No account exists with the provided key