Closed Free facebook on sun tu200 not working on my phone.

Pa help naman.,, im using sun sim since january, and
regular ako nag loload ng TU200 prepaid load..

Im using Oppo Joy 3 android phone.

hindi ko magamit ang free facebook nya sa phone ko
na dapat may free facebook sa TU200 prepaid load..

ive try restored internet settings as in nka default na.
meron kayang babaguhin sa settings.?

Thanks in Advance sa makakatulong...