Staples.com chat

Description of the issue:
Chat does not function with Brave. Extensions and shields turned off.

Exact URL of the website in question:
https://www.staples.com/hc?id=54201c2b-5e79-415d-bc8f-cd1cf1bf83f2

Did the issue present with default Shields settings? (yes/no)
Yes

Does the site function as expected when Shields are turned off?
No

Is there a specific Shields configuration that causes the site to break? If so, tell us that configuration. (yes/no):
No. With all shields turned off chat still does not come up.

Does the site work as expected when using Chrome?
No idea. I do know that it works properly with Vivaldi

Brave version (check About Brave):
1.35.77