If the platform you intend to play from has not listed your country on their site as a blacklisted location, usually they advise you try to either change browser or clear your cache memory... If not try check that you aren't using a VPN which could be restricting your access to the platform... Sometimes if the casino has intergrated cloudflare this is the culprit denying you the access.
I will not try to access that platform because I do not want to get a problem. The casino is already restricting our access, so we should not keep trying to access their site while there are more gambling sites that we can use to gamble. It is better to play safe and not risk ourselves on the casinos that don't allow us. Perhaps, asking their support system is a good idea to know why we can't access them. Using VPN is in the grey because some casinos will not allow us to use it.
Using VPN some time break rule from Term of Service some casino gambling site and I think not good ideas when opening casino with VPN, better not try access casino platform by using VPN. I think when asking on costumer service they will not recommended for you to access casino by using VPN because could detected with multiple account or your account can claimed as illegal access or mean your account was hack and open on different IP.