Problem of character received by the Arduino connected to a HC-05


I tried to check the configuration of the arduino uno i just bought as well as a bluetooth HC-05,
following the tutorial Arduino Bluetooth Basic Tutorial - Arduino Project Hub

Everything seems to work correctly, except that, thanks to the monitor windows, i realized that the character sent to the arduino don't look right at all. i tried to print them to see how they look like,
most likely i see that: ⸮ whatever i send with my phone.
It looks like a problem of mapping of data transmission at the reception level of the arduino. Has anyone experienced this problem already?

thank you for your help.

what baud rate have you set the serial ports too?

the HC-06 I have defaults to 9600baud