Having Issues Connecting to the Public Gateway close to Abdullah Hukum LRT

Hello, I am kinda new to the whole ttn and lora. I am trying to get my LilyGo Tbeam Node to connect to the gateway but on my device page it shows me Last Seen Unavailable. Would appreciate any help I can get.
LoRaWAN TTGO GPS Tracker (aeq-web.com)

I am using the exact same components as the link above. Thanks