How can one access the network login and password?
It is not found on any of the tabbed pages.
My friend pressed reset on his RG21 and had to call the technician to set it up for him again

Yes, but no place to input credentials back into resetted RG21

PPPOE login and password

It's my friend's RG21 (Astro fiber installed only two months ago) and he says there is no option to input the PPPOE credentials.
I think he said Quick Setup only sets up Wifi

Assuming that's true how would he get admin privilege?
Even if he has that access there may not be any PPPOE config page,
It might require a special app to set that up.
Upon installation of Astro fiber the technician specifically told him not to hit the reset button