Hi, need some help on setting up the X50.

I am using Celcomdigi fibre, and trying to replace the free router with x50.
Downloaded the app, and follow through the instruction from app, but was stucked at last step (connect to internet). It failed to connect to internet.

I have selected PPPoE, and fill in the username and password (extracted from the old router configuration). Have also tried enable the IPTV option but it still didnt work.

I am using LAN1 from modem to connect to the X50. If i switch x50 using same cable to my previous router, then the internet is working, so definitely not internet down or issue with modem/cable.

What else am i missing?

Thanks