^ That is if they have an announcement thread you can ask them or their staff because if you are on the gambling site, how could you ask if you can't access the site because it is already blacklisted. Many gambling casinos were against this VPN because it could be the gateway of the users to have fraud activity because they know they can't be traced because they already masked their IP address and of course, their identity. Once you access the gambling casino site, reading the TOS is a very important factor to avoid mistakes in the future.
Besides that, if we can't access their site, it means that that site has blocked our country's IP and we don't have to keep trying to access the site using a VPN because, after all, we will get in trouble because we come from an existing country on their blocklist. By reading the TOS, they hope that we understand what we should not do while playing on the gambling site and avoid harming our own account.
Insisting on using a certain gambling site which is either blacklisting your country or blocked by your country is nothing but a suicide. It will not only be a violation of the site's terms and conditions but also a violation of your country's policy. And not only that, you are risking your money by using that gambling site. The moment that site detects that you are playing from a forbidden location, your account as well your money will be locked. What would be your defense then in order to get back your money? Nothing.