How do you unlock your poptropica accounts?
You can't, unless you know the password. If its locked, it means someone has changed the password, or you have forgotten the password.
All poptropica accounts are free. To save, you must make your character, begin playing, and then press the blue save button on the bottom right corner. This will get you 75 free poptropica cents (or whatever you call them). Poptropica does ask you to pay if you want more poptropica cents, though. The only other way to get them for free is to complete an island.