Issue With website on avg secure browser

I have created a website for one of my clients, but there is an issue with the website on AVG Secure Browser. The website is not loading on this browser, and I am not sure of the reason behind it. I have also tried accessing the website on AVG Secure Browser, but it is not opening. I suggested to my client to use a different browser, but he said that he exclusively uses AVG Secure Browser for all his work, and his other settings and preferences do not work on other browsers. I have tried searching for a solution from different sources, but I haven't found one yet. I have come to support in hopes of finding a solution. Thank you.

Hi Adnan,

We're glad to look into this & help you.
Please let us know what happens exactly while accessing your website. 'Did your client receive any error message from AVG?
If so, please share us the screenshot of it for better clarity. 

Hi Adnan,

We're glad to look into this & help you.
Please let us know what happens exactly while accessing your website. 'Did your client receive any error message from AVG?
If so, please share us the screenshot of it for better clarity.