I use a Canada VPN to buy Hive on MEXC so maybe you can buy it on MEXC.
I use CashApp to buy BTC then send to MEXC and buy Hive with BTC.
EDIT: This post inspired me to write a step-by-step guide on the topic - https://hive.blog/hive-120516/@crvne.eth/how-to-buy-hive-the-easy-way