[root@HOSTscripts]# ./letsencrypt.sh request_single DOMAIN.com 4096
skipping DOMAIN.com challenge test failed
Requesting new certificate order...
new-order error: HTTP/1.1 400 Bad Request
Server: nginx
Date: Wed, 29 Dec 2021 00:27:38 GMT
Content-Type: application/problem+json
Content-Length: 178
Connection: keep-alive
Cache-Control: public, max-age=0, no-cache
Link: <https://acme-v02.api.letsencrypt.org/directory>;rel="index"
Replay-Nonce: 01027-zjjuiULQIbIQ5dC1dbS6PxeksSWJ4-XFIcQE98S4Q

{
  "type": "urn:ietf:params:acme:error:malformed",
  "detail": "Malformed account ID in KeyID header URL: \"https://acme-v02.api.letsencrypt.org/acme/acct/\"",
  "status": 400
}. Exiting...
[root@sleekhoster scripts]#