gateway status is offline on TTN

[BouTayehGaby]

I was able to connect my nano-gateway to TTN, and it worked like a charm, I was able to send data and I was receiving pull and push Ack. However, now it just refuses to go online, no matter what I do the gateway is always offline on TTN, I cannot send data and I am not receiving any push or pull Ack.
My configuration is 100% correct, and there is nothing wrong with my code. Any idea what seems to be the problem?

[fusspawn]

I had this a few times,
try resetting the framecounter within the TTN control panel to 0. and power cycle the board.