Because you claim something was "advertised" to you is not exactly as in the version you downloaded you cry scam. This is not how advertisement works. This is not how scams work. This is not how screenshots work.
And apparantly you did not even reach out to the developer for clarification or to remedy the situation.
For your information, there are real scams on this site. People selling stolen games, usually with malware in it.
https://en.wikipedia.org/wiki/Scam
It is even debateable if the issue you believe is happening even qualifies for false advertisement, as you only saw something in a screenshot from a project page of a game that is still worked on and has different versions. And not an advertisement.
https://en.wikipedia.org/wiki/False_advertising#Misleading_illustrations