I took a quick look at the server logs for requests coming from what I believe is your IP address (ending in
.251). Over the past 7d I can see a fair number of ACME v1 new registration requests that include a contact email but unfortunately none of them look to have succeeded.
One batch received replies like:
"Error":"409 :: malformed :: Registration key is already in use"
indicating that the ACME client is trying to create a new registration but using the same public key as an existing registration.
The other batch received replies like:
"Error":"403 :: unauthorized :: Account creation on ACMEv1 is disabled. Please upgrade your ACME client to a version that supports ACMEv2 / RFC 8555. See https://community.letsencrypt.org/t/end-of-life-plan-for-acmev1/88430 for details."
As @mnordhoff mentioned (thanks!) that batch is a result of our rolling brownouts.
Can you perhaps try again now that the most recent brown-out has ended? I can check the logs again afterwards to confirm if there was a successful new account registration with an updated contact.