No exactamente. Ir a por/ir por son ambos correctos, la única diferencia es que aquel se usa en España y este en Latinoamérica.
I know nobody who would use that in Spanish either... I would say:
-Fuimos a alquilar una pelicula -Fuimos a coger una película -Fuimos a pillar una peli (slang)
In my eyes the exresion ir+por is followed by the reason you go. Say I go to that café for their burgers. Voy a ese café por sus hamburgesas. but not an object.
I know "despues" means "afterwards." However, I put "then, we went . . . " because, in a much earlier lesson that was considered the right answer. Plus, every translation service I checked translated "despues" to "then" in that sentence. I was marked wrong, though. Will report.
This is a very long and confused thread. The native Spanish speakers (such as Luis) have explained in some of these discussions that the sentence actually meant
Afterwards, we went to get a movie
I would never have guessed that - particularly not with the translation given. It seems to refer to the idea of renting a movie - or possibly getting one from the library as we do in my town.
Clearly the translation is not something that one would say in English, and suggests a meaning completely different from the Spanish, so it would be nice to see this fixed.
Looking again at examples on the internet I see that ""Después, fuimos por una película." occurs only on Duolingo and that this form is generally used as it is used in English: "We went for an ice cream," "We went for a coffee."
So I suppose the sentence should be rewritten, replacing película by café or helado - which will make sense in both languages.
So after reading all the comments, I'm more confused than ever. I put "we went for a film" and that was marked wrong with "we went to a film" given as the correct answer, but the comments seem to suggest that it's going to "rent/hire a film" so how can "to see a film" be correct? And if "we went for a film" is wrong, why is "we went for a movie" given as the answer above? Surely, "movie" is just the US word for "film".