The Hurricane Heist (2018)

Continuity mistake: While Casey and Morris are video calling, Casey is holding the iPad perfectly and then suddenly it turns upside-down in a later shot. (00:13:35 - 00:14:42)

Casey: I'm out of bullets!
Will: Well how'd that happen?
Casey: I shot them all.

Question: After the hackers get almost the entire code, they say that if they try to make a mistake the vault would be locked for 48h. Earlier in the movie they tried their obsolete code before discovering that it wasn't working. At that time why didn't the vault lock itself for 48h?