Let's Debug

Test result for acer-isu.com using http-01

Debug
Requests made to the domain
Request to: acer-isu.com/60.250.195.22, Result: [Address=60.250.195.22,Address Type=IPv4,Server=Apache/2.4.37 (centos),HTTP Status=301,Number of Redirects=1,Final HTTP Status=404], Issue:
Trace:
@0ms: Making a request to http://acer-isu.com/.well-known/acme-challenge/letsdebug-test (using initial IP 60.250.195.22)
@0ms: Dialing 60.250.195.22
@384ms: Server response: HTTP 301 Moved Permanently
@385ms: Received redirect to https://acer-isu.com/.well-known/acme-challenge/letsdebug-test
@385ms: Dialing 60.250.195.22
@965ms: Server response: HTTP 404 Not Found

Debug
A and AAAA records found for this domain
acer-isu.com. 0 IN A 60.250.195.22
Challenge update failures for acer-isu.com in order https://acme-staging-v02.api.letsencrypt.org/acme/order/5751349/3715707794
acme: error code 403 "urn:ietf:params:acme:error:unauthorized": 60.250.195.22: Invalid response from https://acer-isu.com/.well-known/acme-challenge/8i59K1p1p7jIF0X9HuJeyhMr-m13X5zXIfbhbbqvTa0: 404
Debug
The IANA public suffix is the TLD of the Registered Domain
The TLD for acer-isu.com is: com
Debug
The current status.io status for Let's Encrypt
Operational

Submitted Aug 19 14:18:13 2022. Sat in queue for 4ms. Completed in 6s. Hide verbose information.