According to Deadline, the movie was moved as it would be better to release in September and be up against horror movie Him and the film Ella McCay instead of going up against Marvel's Thunderbolts*.

Avengers: Doomsday Actor Alan Cumming Says He Filmed His Scenes 'In Isolation' Using Green Screen and Often Didn't Know Who He Was Supposed to Be Acting With X-Men and The Traitors star Alan Cumming ...