@zwiebelspaetzle Mobile could be IPv6, could be a different web server entirely as they have multiple IPv4s.

https://www.ssllabs.com/ssltest/analyze.html?d=www.podtrac.com&s=44.239.236.149&hideResults=on&latest looks pretty good but does show "Chain issues Incorrect order, Contains anchor". If the client had an issue with that, I would expect it to be a problem regardless of connection...but again could be different web servers.

@rafamello

Como pensávamos, o problema é com *.GOV + cert.

More details are in the attached file. I cannot seem to add it here, because it's supposed spam.
A little frustrating.

MoreDetails.txt