That's 100% intentional to drive up buzz and social media interaction. You took the bait hook line and sinker (and I'm helping their marketing team as well by adding engagement).
I don't recognize the app or site from the UI so it's possible that somebody or an automated process chose the wrong image. A more likely possibility is that a screenshot was edited to make content for a shitposting community. In any case, that's not the official movie poster.
Doubt it's intentional. The saying "all publicity is good publicity" is not true, particularly in this day and age. Folks are sensitive about sensitive topics and racism is one. They'd never knowingly try to market it in such a shady way as the backlash to being found out could bury the movie.