Has someone configured a Beetel 7777AP router for TTML?

I am not sure if it's a MAC ID issue. I asked them to update the MAC ID for this Beetel router at their end. This is my first time in India and the technician was not very fluent with his English so things aren't really easy as of now. The customer care is helpful but they haven't understood the issue either. So while those things take their own time, I was thinking I will try to configure the router myself.

I am using PPPoE and using the correct username/password but I see no light glow for the "Internet" option in the router.

This is how it looks now: https://i.imgur.com/YUmWF4i.png

Can anyone of you help me set up this Beetel 7777AP router?