Pfsesne Let's Encrypt error issuing Certificate

Hi, I am getting problem while issuing lets encrypt certificate.
name.domainname/:Verify error:Invalid response from http://name.domainname/.well-known/acme-challenge/C27R5jTknkrfD3-7gMfiISsDIG3qtluDM_JcI8CEUHI [xxx.xx.xx.xx]: 503
Note: Above domain name is changed just for example.
If i go to/tmp/acme/acme_issuecert.log
“type”: “urn:ietf:params:acme:error:malformed”,
“detail”: “Unable to update challenge :: authorization must be pending”,
“status”: 400
If i hit : http://name.domainname/.well-known/acme-challenge/C27R5jTknkrfD3-7gMfiISsDIG3qtluDM_JcI8CEUHI
503 Service Unavailable
No server is available to handle this request.
From the Pfsense Web GUI: Diagnostics -States- States on WAN interface
WAN icmp pfsenseIP:44206 → FirewallIP:44206 0:0 298.811 K / 298.811 K 8.26 MiB / 8.26 MiB

My steup is 2 Pfsese with HA with CARP virtual IP.

I have only done this using DNS for LE certs. Might want to try their forums https://forum.netgate.com/

Hi @LTS_Tom
thanks !
This is also DNS for LE certs.