hey, i'm on my sub account right now, and i would like to buy the call of duty black ops map pack, or maybe rdr map packs, either way, i need to put my psn $20 card on. but when i try to put the money on my mom's master account on my computer, it says site down for maintinance, like it has for the past few months...but the store works on my console, but if i try to log in with her account, it says i can't. idk what to do. do i just not add money until i'm 18 and hope that my sub account turns into a regular account? (this would suck because i'm 14...)
The sub-account won't ever change into a master account, so count that option out.
You said you can't sign into your mom's account, but you didn't specify the message you get. What does the PS3 tell you when trying to sign in?