My phone doesn't show me a specific wifi network

Hey guys, My phone can't seems to find a specific wi-fi, I pressed scan and it doesn't come up for some reason, it used to. I've tried everything, turn the phone of, take the battery out, blow of dust, play around with the settings, but it doesn't appeared in the wifi list.

The phone is finding my neighbors & office wi-fi and can connect to the them perfectly, so I'm really confused.

The specific wifi network which I want to connect in my phone, is working perfectly with other devices, also my friend's phone can connect to it.

So the bottom line is, only my phone is not able to see this specific wifi network in the list. other device can find it and can connect to it.

Does anyone know whats wrong, has this ever happened to anyone else?

HELPPPPPPPPPP

Phone: MOTO G (first generation)

Android version: lolypop

PS: THIS IS MY FIRST EVERY POST ON THESE FORUMS, SO IM NOT SURE WHAT IM DOING AND WHAT INFORMATION YOU GUYS MIGHT NEED. THANKS