Unable to access webpage

[magnus]

I have a customer that is a hundred miles from me reporting a strange issue.
Their IT company wanted to use the web port access port so I changed it to 4500. SAD access is not effected but now the customer is unable to log into the web portal.

They are using 6.2.3.53
I have attached the screenshot he sent me

[ramitel]

Looking at the screen shot it appears that the web browser has a certificate error because the system is using it's self signed cert. (Which is normal)
Can the user select show details and accept the self signed cert and continue