Cirriculum problem

My problem is in the access to the freecodecamp cirriculum. Every time i try to click on the ‘cirriculum’ button my page just simply shuts down and the “Can’t access the page” message follows. Any idea what i might do with it?

If you can’t access then the most likely explanation is that it is being blocked by your ISP, local network, VPN, or proxy.

I have no idea whatsoever how to solve that. Can you help?