Can someone explain this to me and tell me why?

There was this korean girl who just dm me on Instagram, she had a pics of a Kpop celebrity on her feed so i originally thought she was catfishing, but she then deleted all of it and put 2 new posts. She then blocked me for no reason, I don't know why, i never did anything, can anyone help me understand
Can someone explain this to me and tell me why?
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