Benefitship is actually complete - it isn't really receiving updates anymore, as we're working on the sequel and other games. The updates to the storefront here are to help increase our sales, etc., such that we have more money to put into future game content.
That said, we are sorry that people keep receiving notifications for it. I would disable it if I could, but it seems that Itch.io insists on giving people notifications for it.
It sounds like you might've downloaded the demo, rather than purchased the actual game, if you're only experiencing one scene.