Don't rob yourself of the chance to solve these puzzles by just using this guide.
If you hit a wall, use the hint.
But if you get really stuck, use the code which are all marked as hidden to not spoil yourself.

Alright, let's get stuck into it.

Green Door, Outside Workshop
Hint: Review the four monitors; they'll display the answer in sequence, even showing where the door is.
Code: 26294

Repair Tape, Welcome Room (Second Balcony)
Hint: It's given by Mrs. Helpful.
Code:0158

Birthday Showroom #1, located next to the Big Top Showroom, behind the cake.
Hint: Go upstairs and review the monitors, the start of the sequence starts with a Wagon Wheel and a Mannequin.
Code: 4782

Birthday Showroom #2, found at the end of the hallway.
Hint: Green boxes reveal all, the answer was in front of your face from the start.
Code: 0434

Retail Showroom
Hint: The text log found in this room will indicate which locations will display each number and in what order.
Extra Hint: Here are the correct order:
MONDAY 9:00 AM - Happy Flowers!
TUESDAY 3:00 PM - Main Office
WEDNESDAY 9:16 PM - Main Door
THURSDAY 6:20 AM - Where you stand all day
FRIDAY 6:23 PM - Over the Ocean

Code: 80625

Administrator Wing, Birthday Room
The office space where all the snitching cupcakes hang at.
Hint: Collect all text logs on this floor, return to the cafeteria.
Remember to put all the text logs in date and time order to get the correct path to solve it.
Code:01350

The following are dynamic to each run of the game so they are unable to be locked down, they will always require you to do the solving but I do have the information to help you.

Big Top Showroom (Second Balcony)
Information:
The code is referencing to the hats the mannequins are wearing downstairs.
Use the photo and match it to the numbers on their back (the mailman's hat is a bit hard to understand)

Every single elevator repair.
Information:
Each time, the position of the numbers will change.
Have a pen/marker and paper on hand, just write down the code and trace the cables with your finger if you are having issues with following it.

House Code
Information:
The colour of David's name, found on the Polaroids, is the key.
Collect all 5 and watch them all till the end and write down the number shown.
D = GREEN
A = MAGENTA
V = BLUE
I = RED
D = YELLOW

These codes and information are valid as of the 15th of June, 2025.
High chance as updates come in and may modify or alter your codes/information and I'll do my best to keep information as valid as possible.

Please do comment if you notice any incorrect or out-of-date information and it will be updated accordingly!