Sounds like they did it for the lols, made light fun of it in their promo material, and Amazon pulled the licensing.

“Mostly, I thought doing so would be funny. For some of you, that’s enough. Great! Otherwise… Financially, the film marketplace this week and next were a desert… So, to fill a screen, why not get this inexplicable vanity piece from the current president’s wife? I mean, it just seems so weird that it even exists (who wants a movie about Melania lol?), and wouldn’t it then be exponentially weirder, to the point of being funny, to show it here, at your obviously anti-establishment, occasionally troublemaking, neighborhood cinema?” Perry wrote.