This website is IPV6 enabled!
If you don’t have an IPV6 IP address, it will not be a problem, you will browse the website in the good old traditional IPV4 way.
Either way the final result will be absolutely the same, so happy browsing! Just realize that one day the whole internet will be IPV6-only. When, nobody really knows but the IPV4 address space is already exhausted and the whole internet is moving to IPV6.