Rentberry (BERRY) is an ERC-20 token, it means you can directly take from DEX (Decentralized Exchange) like:
https://forkdelta.app/#!/trade/BERRY-ETH (copy paste the full string)
https://etherdelta.com/#BERRY-ETH[Hitbtc has not a "top" reputation... there are few scam accusations and this is not a good sign

]
That is great. Can you show me how to do that? I would really appreciate it.
Hi, it's full of guide out of there! Just try to look on google. Or you can check guides provided by coingecko (step by step and trusted one)
https://www.coingecko.com/buzz/complete-guide-to-using-forkdeltaI don't know if you have ever used these kind of stuff (eth and erc-20) be carefully try to make a trade with few dollars and try to learn as much as you can before, and become more confident of the platform
https://www.coingecko.com/buzz/how-to-use-an-ethereum-walletHave you tried with VPN?
I often to use VPN when there is a site who has blocked with my government. Like investing.com which was blocked by my government but I can open it with using VPN and it does work.
Also, you can use another exchange which is allowed US citizen to using it. You can see in the token's site, usually there is a feature to know that the token has been trading in several exchange.
if the exchange require KYC for a withdraw, or if they noticed you're using your device from a country were isn't permitted... you have lost your money. Better not give these useless suggestion

Yes you are right. VPN does not work.
Thank you for your help.