Hi Xenina,
Ako din nagpasa ng bank statement within 3mos after opening one and based sa MPNP website 3mos lang daw hinihingi nila.
With regards sa 90days online application sa website, my wife got a reply from the email saying na yung 90 days will start count from the last time you log out sa MPNP website. Meaning for example po, in-access nyo website today at nag log out din, you have to log-in again within 90 days or else mafo-forfeit yung application / information na pinasok nyo dun..hope this helps! Good luck po sa application! God bless!