Other mistake: Bashir Salahuddin appears in the ending credits of the Italian localization as "Detective Summervile" with one L. It's a spelling mistake that appears also on IMDB, so one wonders if the localization team lifted name from the website, or if the theatrical version had the spelling mistake and was fixed afterwards.
Other mistake: Emily does not let people take her pictures, but she obviously has documents - she signed papers and has a driving license - and also has a husband quite fond of her who spends ages sucking face with her. With all that considered, nobody picks up on the obvious fact that her mole (which is in a position that would show in every mugshot) switched sides.
Other mistake: The vlog entry that leads to the finale is #47. Six months pass, the caption say, but in the finale Stephanie is posting her vlog #290. That's more than 40 entries per month, and Stephanie always keeps her entries daily throughout the movie even under the craziest circumstances.
Other mistake: Stephanie's vlog gains over 85,000 subscribers in the space of the minutes it takes for her to livestream from her home to Emily's house. While Youtube has had much larger sudden increases in followers, this is not Youtube, but a private blog that begins from 34,000 subscribers. It seems quite unlikely that even by word of mouth it could have the critical mass to grow by 200% in such a short time, considering that it reached those 30k with a murder story that had media coverage, and it takes then 6 months for her to hit 1 million afterwards, with the amazing scoop and juicy media story that follows. It should also be noted that her figures when she asks to identify the Kia are ridiculously low; she manages to find the same car the police can't find thanks to her channel that has a whopping 1,013 subscribers worldwide at the time.