Solution to the puzzles in case of stuck:

Diary code is Jens birthday: 2401

Phone password is DREAM on poster- the letters correlate to the numbers on the passcode: 37326

Password to combination lock is BFF’s Date of Birth: 08/11/06

The key opens the second drawer

The puzzle box in the drawer- press down the squares that have pieces on them on the chess board

Use chisel to open pot in wardrobe

Pick up the water and click on the flour to make clay

Pick up the wheel in the wardrobe and click on the counterpart on the desk

The key from the puzzle box opens the bottom drawer

The password to the laptop is Jens middle name and the name of her first pet: RogerDaisy

Search Hopes name in the PeopleFinder tab on the laptop: Hope Slater Sussex 1962

Call the number on the phone

Look at the photo on the wiki and the first name of the person translate to the same sigil on their top.

Turn the decoding wheel until the letters and sigils match up the same of the sigils on the t-shirts in the photo

Write the name (MORAK translated) down on the paper to the left of the laptop: Northwards facing arrow, Pi symbol, Upside Y, Sidewards S, Three horizontal lines

Pick up the paper and put it in the pot

Pick up the clay and place it on the pot

Game won