After reading it a third time, I realize I guess it's just an open-source version of Mint?
But the author provides zero evidence that Google bans ads for "privacy-first services". It was probably classified as a crypto scam or similar.
Just write a better ad that's clearer about what it's actually advertising, for goodness' sake. And make the product's website a bit more professional looking too -- it looks like a scam. There's no way I'd trust my finance credentials to anybody who built a site that looks like... a weirdly updated version of a GeoCities page?