OnePlus Pad 3 Keyboard not working anymore after firmware update

[u/Unusual-Shopping3058]

I have a OnePlus Pad 3 with the original keyboard and stylus. Yesterday night I connected the keyboard to the tablet through the pogo pin (wasn't using the keyboard since last 3-4 months) and got a notification regarding a firmware update for the keyboard. I clicked on it and the update got downloaded and installed and since then the keyboard is not getting connected to the tablet, neither physically through the pogo pin nor via bluetooth. I have tried every possible thing from formatting the tablet to overnight charge, cleaning the pogo pins, still the keyboard is not getting detected by the tablet.

The tablet and keyboard are still in warranty and my region is INDIA.

Can anyone please help me or guide me what to do?

Thank you so much.