The same as my experience some time ago and I have shared my experience in the older thread. In short, I cant visit the site with few different countrie's IP (including with my original IP) but I can visit when I use Japanese IP. Some people said that it is due to blockage by ISP but I do not think so, because most gambling sites are blocked by my ISP and changing DNS can bypass the block by ISP or using VPN (with the same country as where I live). This site is a bit different because I have to try few different IPs from different countries until I can access it.
Have you tried checking out the list of jurisdictions that are banned from using the casino?
Anyway, I can access it from my side without even using a VPN service. ISPs from here don't even block any online casinos anyway if that was the case.
To make it easy, let me post restricted jurisdictions
15.2. AML & Sanctions compliance: Ybets expressly prohibits and rejects the use of the Service for any form of illicit activity, including money laundering, terrorist financing or trade sanctions violations, consistent with various jurisdictions' laws, regulations and norms. To that end, the Service is not offered to individuals or entities subject to United States, European Union, or other global sanctions or watch lists. By using the Service, you represent and warrant that you are not so subject.
15.3. Jurisdictions: Persons located in or reside in Australia, France, Netherlands, United States or Philippines (the "Prohibited Jurisdictions'') are not permitted to make use of the Service. For the avoidance of doubt, the foregoing restrictions on engaging in real-money play from Prohibited Jurisdictions applies equally to residents and citizens of other nations while located in a Prohibited Jurisdiction. Any attempt to circumvent the restrictions on play by any persons located in a Prohibited Jurisdiction or Restricted Jurisdiction, is a breach of this Agreement. An attempt at circumvention includes, but is not limited to, manipulating the information used by Ybets to identify your location and providing Ybets with false or misleading information regarding your location or place of residence.
15.4. The attempt to manipulate your real location through the use of VPN, proxy, or similar services or through the provision of incorrect or misleading information about your place of residence, with the intent to circumvent geo-blocking or jurisdiction restrictions, constitutes a breach of Clause 5 of this Terms of Service.
15.5. Players from the following restricted by Financial Action Task Force (FATF) countries and their territories are not allowed to deposit and play real money games – from the blacklist: North Korea and Iran, and from the greylist: Albania, Barbados, Burkina Faso, Cambodia, Cayman Islands, Jamaica, Jordan, Haiti, Mali, Morocco, Myanmar (Burma), Nicaragua, Pakistan, Panama, Senegal, South Sudan, Syria, Turkey, Uganda, Yemen, and Zimbabwe. The Casino cannot guarantee the successful processing of withdrawals or refunds if the player breaches this policy of the Terms and Conditions.
Does your Jurisdiction feature anywhere?