Most likely yes it is for Indonesian gamblers only since anyone who wants to play on that sites needs to have Indonesian Bank Account and usually it is blocked for even Indonesian IP address since gambling is ilegal in Indonesia and most gambling sites are blocked by Indonesian ISP. That's why most gambling sites provides alternative links, so players can access it.
I see.
OP should insert warning and give Pop up their website like "
forbidden for Indonesia IP" and give us the chance to use TOR or VPN when to continue playing it. and better to use the global language because they make Ann thread here.