Frequent disconnection issue - JioFiber router with TP-Link C6

@bobby_kes - I saw your comment on Ethernet Port on Jio Fiber | Reliance JioFiber that you are also using same setup. Can you please help?

This could be problem of their network. I am facing similar problem since 2-3 days. In JIO STB, "Internet restore" message is flashing frequently.

Hi Tarun, On my Jio Fiber I have disabled 5GHz and removed the LAN cables and still I see the frequent disconnect issue. The issue is more visible when I am doing WFH and the office VPN is keep getting disconnected cause VPN application is sensitive to the network connectivity. While the same laptop works great on mobile Hotspot and with my basic Telephone line connection. I have talked to Jio Fiber guys and the ones came to my house told that it is issue with every one working remotely. Do not know when they are going to understand and fix this issue. I have observed that during the disconnection open a new website and it would take time to connect.

issue could be within jio fiber box try resetting both jio router and TP-Link router and configure again

I'm facing the frequent disconnection issue on the Jio extender. All the devices work normally when connected to the main router. I filed a complain and they replaced the extender with a brand new one, but the issue still persists. Anyone found any fix?

Check if your extender is getting the minimum required coverage from your Jio router.

Yes it is. I have tried different locations aswell (within 4 meters, within 10 meters). There is also no obstruction between the router and the extender.

I've also noticed a lot of errors being transmitted on the WLAN Statistics page. I am not sure if this has anything to do with the issue but just putting it here for the record.
Check the screenshot here

Kindly share the range value (in -dBm) you are receiving at the base station. Since Jio does not allow tinkering the wireless settings, theres not much to do with.
Usually, by default the ap1 profile is 2.4Ghz and it seems that is more often used by clients, which does not seem right.