I am totally stuck on the coordinates I’ve made the holes in the letter but can’t work it out
Hi,
if you are still on day 1 you should postpone solving the letter puzzle until you reach day 2 and instead thoroughly inspect the desk in the bookstore.
If you are already on day 2, you can check out these hints I posted on steam:
https://steamcommunity.com/app/1190270/discussions/0/2270321250036863651/
Best regards Christian