Cannot access a website service via my Microsoft Azure VM. Website says I am using a proxy or vpn. How do I change this?

I am trying to run a couple of website performance tests on https://tools.keycdn.com/performance. However, the website states that I am using a proxy or vpn which blocks me from using their services. I did not actively set up either of those.

I am accessing the website via my Azure Ubuntu VM, manually navigating to that website via a Chrome browser. How can I either change those Azure settings or alternatively hide those settings, so that this website does not block me anymore?