Gateway Disconnected

Hello, I have a problem when I create my gateway appears disconnected, if I have an internet connection from my gateway, I also choose my cluster correctly, I don’t know what happens, someone could help me.
Thank you very much for any advice

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It would make life easier if you tell us a little bit about your gateway e.g. manufacturer, type, firmware version.

My Laird RG191 keeps showing up as Disconnected as well.

I use a Browan MerryIoT Helium Gateway. It Supports a secondary LNS and simultaneously sends packets to both. I am successfully connected to TTN on my Browan, but not in TTN. Any idea what might be the issue ?