Cache is not at posted coordinates. This is a BONUS cache connected to the Adventure Lab cache of the same name ("Most Valuable Thing in my Wallet"). To obtain the coordinates, you will need to download the Adventure Lab cache app and visit 5 locations. Each location will give you a piece of information you need to put into Certitude to get the final coordinates for this BONUS cache. All the information can be found in your Adventure Lab Journal entries.
Enter (into Certitude checker) the 3-digit number that is the total of all the numbers you see on the journal pages of the Adventure Lab.
Link to Adventure Lab Cache: https://adventurelab.page.link/FsXC
You can validate your puzzle solution with certitude.