B4X FEED signup and login page whit B4A and PHP

[practicalsoft]

Hi developers. I am really stuck in a bad problrm. I want to make signup and login page with B4A and PHP. I wrote the signup codes.but they did not work correctly.
actually the quary did not work. when i post the values with B4A. it does not return any eror. but nothing add into database.

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this is my PHP codes.
what should i do?

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