Yes I did! I thought I was alone. I love when movies do their best to have some sense on the tech side, it could have been an annoying "sending ransom note.." loader instead.
I think its a testament to ProtonMail's popularity, that they get some screentime in a film with such a high-profile cast. Perhaps a techie in the film crew suggested they use it.
In any case, there are still plently of TV series and movies that put less effort into a 5 minute 'hacker' scene than this movie did into a 2 second shot. They get my kudos.