I think using a VPN is not too risky because it is blocked, like me when using BitCasino I can't access it because it's blocked but that's the only way to use a VPN to be able to play with the slot you want.
To be precise I'm from Croatia and from what I've seen from the answers you guys provided, seems that provider issues looks like the most plausible one. It still does not make sense to me what are the reasons to block a game in a certain country though, so If anyone knows or has an idea please share