In Mario and luigi bowsers inside story preservation chamber problem?

Answer 1

to answer the code you need to look for secret notes. the secret notes are all around the fiery spot. the code is :square, circle ,triangle then door... square 2 times first, then O 1 time then triangle 3 times and finally door. But you need to find the 4 secret notes first and you need to beat Chakron with the snack basket move winch can be found in Dimble Woods.