@jple, I’ve just sent a note to Josh about this, but do you know who is responsible for this or who would like to be tagged about this on the forum these days?
I’ve checked in with Let’s Encrypt administration; if you’re able to provide evidence that ADP accepts this certificate issuance, please get in touch with the Let’s Encrypt security folks via the contact information at https://letsencrypt.org/contact/ and they should be able to help you.
Thanks, and sorry for the inconvenience.
@jple, I’m happy to hear if you have another suggestion for a more convenient way to route these inquiries!