I got an error when create telegram application - telegram

On my Telegram site, after filling in the fields, when I click on the submit button, I encounter this problem:
Does anyone know what the solution is?

You can't create new application with public vpns

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I'm developing a bot in telegram , here is my problem:
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if started bot receive receive is ok,
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There is no way to check if bot can talk to user or not without send message.
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