I got notice " Unfortunately, LuckyBit is not optimized for mobile devices, yet. Please visit us from your computer, or proceed (but you have been warned). "
I guess someting went wrong with your system to detect device user.
It happend to me earlier that i were using zoom for the chat, when turned pc back on again I showed the same thing you got, anyhow you can proceed and it works fine .
Luckybit doesn't have a responsive design right now, That's why people get a warning under small screens. But it gives the option to continue to the site anyway. Devs are thinking about what to do for the mobile version, nowadays responsive sites are cool but lot of people prefer apps. A solution for this is on the 'to do' list.