When you press "Check if you are human" nothing changes, it doesn't show the recaptcha, the page goes back to the beginning again, as you can see in the image.
We are here: "Browsers running on older NT family operating systems" and I am using XP, so you can see a certificate error, maybe it is the fault of Cloudflare problems.
The funny thing is that some older browsers work ok, for example: mypal-68.13.8