Why is this German man ignoring me?

Anonymous
So I've been taking/Web caming with a guy for a year and he is from Germany n we made plans to meet up in the usa where I live. My friends suggested I see his passport n ID to make sure he's actually who he says he is. I asked for it thinking it was no big deal. He said to me that's a lot of private info and within an hour long to respond back to me, he told me that's not a good idea because he spoke to his friend whom studies laws. I was shocked. When I asked for the reason he didn't reply back. It's been 2 days since I heard from him and the plan meet up is in 4 days. I don't know what to do, I'm completely lost and puzzled. I know German men are shy, n this one can be super shy and sometimes one worded. Can anyone make sense of this?

P. S he already bought the ticket.
Updates
+1 y
Last night I snap chatted him saying I am worried about him n I hope n pray he is ok. This morning I saw that he opened the message n even screen capped it!! Now I'm more confused than ever!!
Why is this German man ignoring me?
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