Why would a girl block me on here when everything was going well?

Long story short, we met on here this morning, had a nice chat for 2 hours or so. Then we even made plans on meeting in real life in 10 days since we are in the same country.

She said she needs to go offline for a while and that she was gonna give me her WhatsApp and Instagram so we could continue chatting on there. Then I said how can I text you since you didn't give me your Whatsapp or Instagram yet.

A few hours passes by and she blocks me. Any ideas why this might be?

Why would a girl block me on here when everything was going well?
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