Why did this girl block me on WhatsApp before she even sent any messages?

Anonymous
Met this girl on Hinge. We got along well and shared some of the same interests. She asked me out on the weekend to which I accepted. I asked for her number yesterday which she gave me and I shot her a message on WhatsApp today telling her it was me. I felt comfortable enough now to compliment her so I shot her a message straight after telling her she had a gorgeous face. Was I wrong to do that?

She read the messages (blue ticks appeared) and didn't reply for a while. So I kind of assumed she was going to block me or something. And now her profile picture is gone from her WhatsApp so I know she blocked me. Was that second message so bad? What other reason could she have to block me?
Why did this girl block me on WhatsApp before she even sent any messages?
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