GA Country restriction as always.
Argentina, Bangladesh, Brazil, Bulgaria, China, Hong Kong ,India, Kazakhstan, North Korea, Macedonia, Morocco, Myanmar, Nigeria, Pakistan, Peru, Russia, Taiwan, Thailand, Tunisia, Turkey, Uruguay, Vietnam.
Also the key itself is country restricted (PRC excluded) too.
And key expires on Mar 31 22:59 UTC.
In order to complete your purchase of Chenso Club, you need to link your Fanatical account to an Unlimited Steam account. This is an account that has spent over $5.00 USD in the Steam Store.
https://www.fanatical.com/en/game/chenso-club