Welcome to the Ybets forum.
I hope you enjoy it and gain many customers, btw I'm having a bit of a problem right now, I can't access the site you advertised, I've tried using a VPN and changing the Chrome DNS on my PC but the results are the same.

Can anyone explain this? I'd be quite happy if there were a site with a red theme.

The same as my experience some time ago and I have shared my experience in the older thread. In short, I cant visit the site with few different countrie's IP (including with my original IP) but I can visit when I use Japanese IP. Some people said that it is due to blockage by ISP but I do not think so, because most gambling sites are blocked by my ISP and changing DNS can bypass the block by ISP or using VPN (with the same country as where I live). This site is a bit different because I have to try few different IPs from different countries until I can access it.