The client lacks sufficient authorization on subdomains

[pfg]

Take a look at this thread, where OP was also serving HTTP on port 443:

Failed authorization procedure. schematics.athion.net (tls-sni-01): urn:acme:error:connection :: The server could not connect to the client to verify the domain :: Failed to connect to host for DVSNI challenge IMPORTANT NOTES: - The following 'urn:acme:

T…