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I had the same problem. You have to set 'Newline' to 'Both NL & CR', if that doesn't solves your problem try to set '38400 baud' to '9600 baud' (That worked for me)...
I had the same problem, but after changing the baud rate of the Arduino Serial Communication from 9600 to 38400 (this is the baud rate of my HC, you can check yours using https://www.instructables.com/id/Modify-The-HC-05-Bluetooth-Module-Defaults-Using-A/ and the command 'AT+UART?) the problem was solved.
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