While Emel said that Andrei is perceived negatively by Libby’s family and that a complaint from someone was the likely proponent of his issues, another reason was given.

Source: https://www.monstersandcritics.com/tv/reality-tv/andrei-castravet-dropped-a-bomb-about-his-green-card-situation-at-the-tell-all-the-real-reason-libbys-husband-was-facing-deportation/