The domain gamerpa.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-
CAA records control authorization for certificate authorities to issue certificates for a domain
gamerpa.net. 0 IN CAA 0 issue "digicert.com; cansignhttpexchanges=yes"
gamerpa.net. 0 IN CAA 0 issue "comodoca.com"
gamerpa.net. 0 IN CAA 0 issue "digicert.com"
gamerpa.net. 0 IN CAA 0 issue "letsencrypt.org"
gamerpa.net. 0 IN CAA 0 issuewild "digicert.com; cansignhttpexchanges=yes"
gamerpa.net. 0 IN CAA 0 issuewild "comodoca.com"
gamerpa.net. 0 IN CAA 0 issuewild "digicert.com"
gamerpa.net. 0 IN CAA 0 issuewild "letsencrypt.org"
Requests made to the domain
Request to: gamerpa.net/2606:4700:3033::6818:6942, Result: [Address=2606:4700:3033::6818:6942,Address Type=IPv6,Server=cloudflare,HTTP Status=404], Issue:
Trace:
@0ms: Making a request to http://gamerpa.net/.well-known/acme-challenge/letsdebug-test (using initial IP 2606:4700:3033::6818:6942)
@0ms: Dialing 2606:4700:3033::6818:6942
@50ms: Server response: HTTP 404 Not Found
Request to: gamerpa.net/2606:4700:3031::6818:6842, Result: [Address=2606:4700:3031::6818:6842,Address Type=IPv6,Server=cloudflare,HTTP Status=404], Issue:
Trace:
@0ms: Making a request to http://gamerpa.net/.well-known/acme-challenge/letsdebug-test (using initial IP 2606:4700:3031::6818:6842)
@0ms: Dialing 2606:4700:3031::6818:6842
@56ms: Server response: HTTP 404 Not Found
Request to: gamerpa.net/2606:4700:3035::ac43:d102, Result: [Address=2606:4700:3035::ac43:d102,Address Type=IPv6,Server=cloudflare,HTTP Status=404], Issue:
Trace:
@0ms: Making a request to http://gamerpa.net/.well-known/acme-challenge/letsdebug-test (using initial IP 2606:4700:3035::ac43:d102)
@0ms: Dialing 2606:4700:3035::ac43:d102
@56ms: Server response: HTTP 404 Not Found
Request to: gamerpa.net/104.24.104.66, Result: [Address=104.24.104.66,Address Type=IPv4,Server=cloudflare,HTTP Status=404], Issue:
Trace:
@0ms: Making a request to http://gamerpa.net/.well-known/acme-challenge/letsdebug-test (using initial IP 104.24.104.66)
@0ms: Dialing 104.24.104.66
@52ms: Server response: HTTP 404 Not Found
Request to: gamerpa.net/104.24.105.66, Result: [Address=104.24.105.66,Address Type=IPv4,Server=cloudflare,HTTP Status=404], Issue:
Trace:
@0ms: Making a request to http://gamerpa.net/.well-known/acme-challenge/letsdebug-test (using initial IP 104.24.105.66)
@0ms: Dialing 104.24.105.66
@51ms: Server response: HTTP 404 Not Found
Request to: gamerpa.net/172.67.209.2, Result: [Address=172.67.209.2,Address Type=IPv4,Server=cloudflare,HTTP Status=404], Issue:
Trace:
@0ms: Making a request to http://gamerpa.net/.well-known/acme-challenge/letsdebug-test (using initial IP 172.67.209.2)
@0ms: Dialing 172.67.209.2
@56ms: Server response: HTTP 404 Not Found
A and AAAA records found for this domain
gamerpa.net. 0 IN A 104.24.104.66
gamerpa.net. 0 IN A 104.24.105.66
gamerpa.net. 0 IN A 172.67.209.2
gamerpa.net. 0 IN AAAA 2606:4700:3033::6818:6942
gamerpa.net. 0 IN AAAA 2606:4700:3031::6818:6842
gamerpa.net. 0 IN AAAA 2606:4700:3035::ac43:d102
Challenge update failures for gamerpa.net in order https://acme-staging-v02.api.letsencrypt.org/acme/order/5751349/119335933
acme: error code 403 "urn:ietf:params:acme:error:unauthorized": Invalid response from http://gamerpa.net/.well-known/acme-challenge/gk0-4P8xyTsucJCwJ4L52DjvgLhRzD8pv-ep5QkfqJo [2606:4700:3031::6818:6842]: "<html>\r\n<head><title>404 Not Found</title></head>\r\n<body>\r\n<center><h1>404 Not Found</h1></center>\r\n<hr><center>nginx</center>\r\n"