Letsencrypt not working on one site

I have my server on a DMZ (NAT'ed) and I have turned off Letsencrypt check in server settings.
Site: https://vmsources.com will not create certificate after migration to new server
Sites: https://support.vmsources.com and https://share.vmsources.com created certificates
Sites are not created as sub-domains, rather A-records exist for each and each is an individual site in ISPconfig.
Also, there does not seem to be a Letsencrypt log file anywhere

Code:

root@web1:/var/log/ispconfig# find / -name letsencrypt.log
root@web1:/var/log/ispconfig#

THX in adv.
-John

 

When I create a self-signed certificate, the site loads. It just seems to be Letsencrypt.
Site now reverted to old server until I can figure out.
THX,
-John