I'm now unable to install SSL certs. This is what shows up in the log:
new-authz error: {"type":"urn:acme:error:unauthorized","detail":"Error creating new authz :: Validations for new domains are disabled in the V1 API (https://community.letsencrypt.org/t/end-of-life-plan-for-acmev1/88430)","status": 403}