The Peugeot 505 in which Auggie and Eyal arrive at the house of Khalid, has not a Dutch license plate.
Carlijn tells Annie that all CIA communications go through a mainframe locally. But in reality the CIA haven't used mainframes since they switched to minicomputers in the late 70s. From then until the end of the cold war they did have DEC minicomputers in West Germany, but a CIA mainframe in the Netherlands would have no purpose.
At the end, Arthur says there are only 104 stars on the wall, but that's the same number as when Jai was killed. There should be several more stars, since Lena had several operatives killed in Russia.