Link Not Working With Popup

Hello,

We have a couple of people who tried to access our New Home Specialist Landing page through the popup (see attached).
The landing page URL is: https://www.brcdenver.com/New-Home-Specialist/
If people go directly to this link, https://www.brcdenver.com/New-Home-Specialist/, it works and they can access the page.
An error code is received when people try to access the page through the popup (see attached).
How do we fix the popup so that you can access the page through the popup?
Thank you for your help.

The screenshots that you have provided are showing a gmail account. The Internet does not allow for viewing a website from inside an email. You will need to direct your visitors to go directly to your website.