Let's Debug

Test result for rets.mydatacube.com using http-01

Debug
Requests made to the domain
Request to: rets.mydatacube.com/156.96.155.76, Result: [Address=156.96.155.76,Address Type=IPv4,Server=nginx/1.14.0 (Ubuntu),HTTP Status=404], Issue:
Trace:
@0ms: Making a request to http://rets.mydatacube.com/.well-known/acme-challenge/letsdebug-test (using initial IP 156.96.155.76)
@0ms: Dialing 156.96.155.76
@165ms: Server response: HTTP 404 Not Found

Debug
A and AAAA records found for this domain
rets.mydatacube.com. 0 IN A 156.96.155.76
Challenge update failures for rets.mydatacube.com in order https://acme-staging-v02.api.letsencrypt.org/acme/order/5751349/250075425
acme: error code 403 "urn:ietf:params:acme:error:unauthorized": Invalid response from http://rets.mydatacube.com/.well-known/acme-challenge/UV_dXLpJvfOipzyvEdI8sYhrfwMkslgAUdKozuY3tIg [156.96.155.76]: "<html>\r\n<head><title>404 Not Found</title></head>\r\n<body bgcolor=\"white\">\r\n<center><h1>404 Not Found</h1></center>\r\n<hr><center>"
Debug
The IANA public suffix is the TLD of the Registered Domain
The TLD for rets.mydatacube.com is: com
Debug
3 Certificates contributing to rate limits for this domain

Serial: 310421385403650986231440922142850079157433
NotBefore: 2021-02-28 13:50:48 +0000 UTC
Names: [rets.mydatacube.com]

Serial: 309729543407737009030023925349450422820770
NotBefore: 2021-02-26 00:21:08 +0000 UTC
Names: [demo.mydatacube.com]

Serial: 274857022791330166491533489808554117607843
NotBefore: 2021-02-26 00:20:57 +0000 UTC
Names: [demo-playground.mydatacube.com]

Debug
The current status.io status for Let's Encrypt
Operational

Submitted Mar 1 21:13:39 2021. Sat in queue for 4ms. Completed in 4s. Hide verbose information.