Device unable to join Lora server

I am totally new to LoRa server. I’ve only recently installed the lora server onto a VM using Ubuntu.
I’m able to add my gateway in but when i tried to join my node to the server, I’m getting join failed on my node but i’m able to see the join request on my server.

Below are the screenshots taken using the mosquitto_sub command.

Please help me.

A post was merged into an existing topic: Node activation OTAA issues