Hey @MigT
Awesome 
But i think you should to investigation what is the main issue reason to prevent repeated in the future with this client or other one 
one more thing, try to make a test again like below image, i think the port 443 is opened now 
Yes, to me it’s the infrastructure service that opened the 443 port even they told me no.
I have an other meeting with my contact and I will ask him to take the test again.
Thanks a lot again 