Bypass grubhub refer

I've been trying different VPNs but somehow grubhub still knows that I'm "refering" myself still. Anyone got a workaround with this?

http://prntscr.com/i7btd7

Did you try clearing your cookies?

If you did then they might be using canvas to track you.

Get Mozilla FireFox and download these addons: CanvasBlocker, uBlock origin, and Self Destroying Cookies.
Run that with a VPN and you should be good to go.

If the above doesn't work just run everything through a VM, but SteveRobs already said pretty much anything else that can be done.