New lightswitch box (smart)

I bought a smart home light switch, but it doesn't fit the common electrical box for some reason, so I remodeled it to be cleaner and lower profile.

You can purchase the smart light switch that I modeled this casing for at:

https://www.amazon.com/gp/product/B07JLQKHVY/ref=ppx_yo_dt_b_asin_title_o00_s00?ie=UTF8&psc=1