Thanks for letting me know that it was an asset pack, because you never know.
I haven't reported the game or the dev in case you are wondering. That's why I asked you in the first just to make sure and to let you know. It's just that art/asset theft isn't so uncommon amongst indie dev crowd. Saw this happen often enough when Steam Greenlight was a thing. So I'm always supper sceptical.
Anyway, thank you for the detailed answer. Hope you have a good day, dear dev.