Starting arduino bluetooth module

I am just a beginner of 13 years in arduino. I want to start using bluetooth module but I am not able to convert the at command into pairing mode, the led of bluetooth module HC-05 is blinking every second but it is not blinking fast. And when I try to pair then message comes pairing rejected by HC-05. Can anyone please tell me what should I do?

Your topic has been moved to this forum section as this location is more relevant to the subject