SSL issue with Company VPN

This is my website. Works fine untill I connect my company VPN.

Here is the photo with VPN ON - the SSL Issuer is hijacked and we get certificate error and with with VPN OFF - the SSL Issuer is LE.

Its not the case the company has banned any website. All other websites work fine in this network. Checked wikipedia and many other LE websites, all working fine,
then what’s can be the issue ?

Hi, @astrarudra . What IP address is returning the wrong SSL certificate when the VPN is used? What is the server IP address responding with that certificate?