You must be at Ember Island to enter these codes. In order to make it to Ember Island you are required to beat the first level. Once there walk all the way to your left, past the volleyball net and proceed to the small buliding. Wait until "Code Entry" pops up and then press A to input the following codes.
|52993833||Unlock All Chapters|
|27858343||Unlock All Concept Art|
|34737253||Unlock All Items For Purchase|