The domain davessa.net is being served through Cloudflare CDN. Any Let's Encrypt certificate installed on the origin server will only encrypt traffic between the server and Cloudflare. It is strongly recommended that the SSL option 'Full SSL (strict)' be enabled.
https://support.cloudflare.com/hc/en-us/articles/200170416-What-do-the-SSL-options-mean-
Requests made to the domain
Request to: davessa.net/2400:cb00:2048:1::681c:1563, Result: [Address Type=IPv6,Response Code=404,Server=cloudflare], Issue:
Request to: davessa.net/2400:cb00:2048:1::681c:1463, Result: [Address Type=IPv6,Response Code=404,Server=cloudflare], Issue:
Request to: davessa.net/104.28.21.99, Result: [Address Type=IPv4,Response Code=404,Server=cloudflare], Issue:
Request to: davessa.net/104.28.20.99, Result: [Address Type=IPv4,Response Code=404,Server=cloudflare], Issue:
A and AAAA records found for this domain
davessa.net. 0 IN A 104.28.21.99
davessa.net. 0 IN A 104.28.20.99
davessa.net. 0 IN AAAA 2400:cb00:2048:1::681c:1563
davessa.net. 0 IN AAAA 2400:cb00:2048:1::681c:1463
Challenge update failures for davessa.net in order https://acme-staging-v02.api.letsencrypt.org/acme/order/5751349/1092849
acme: error code 403 "urn:ietf:params:acme:error:unauthorized": Invalid response from http://davessa.net/.well-known/acme-challenge/HCe3DMPuQmVb2lvXP75sKxfQuaJTegoZ0lWpZLOVPGE: "<!DOCTYPE html>
<html lang="en-US" xmlns:fb="http://ogp.me/ns/fb#" prefix="og: http://ogp.me/ns#">
<head>
<meta name="p:domain"