How do I get my AT commands to work?

I'm in AT mode, but my AT commands doesn't work.

My bluetooth module is at this website:

The code I was using is from this website:

Please attach the code You use in this topic and please use code tags.

Do you have a potential divide connected to the Rx input so that it only receives 3.3V signals?

The following is from the site you linked to, so you should have seen it before.

5V applied to the Rx input can damage the device.

I rearranged somethings, but I will try again.

got it