Apparently, he converted to the Faith. He's been experiencing some personal and criminal troubles, but if this grounds him and leads him to the Cross, then all the better.

LaBeouf told Barron that the traditional form of the Catholic mass — celebrated in Latin — was key in both his conversion and his performance as an actor playing Pio.

That's wonderful news, especially since he's an ethnic Jєω. Let's pray that he finds his way to the Traditional Catholic Faith. He's already a step in the right direction taking on the role of Padre Pio, as well as this from Minnesota's article above:

I'll add him to my intentions.

Clip from the film, already a bit let down. There's some foul language at the end

I'm pretty sure he's already on the out with the Hollywood brothel and has been for years. And I think this is a foreign film as well, hence why it's actually about something that brings people to Christ (some reservations held, though, given the clip above) rather than glorifying sin.

Is the cussing really needed?

LaBeouf seems sincere in his catholic journey but then again admits in the interview that he loves "immersion acting".  Connecting with a character, even with a saintly priest, does not make a conversion.  I hope that personally he gets some benefit and it's lasting.