The cache is NOT at the published coordinates!
To get the coorect coordinates, you will need to complete the Adventure Lab "visiting SMU" available on the Adventure lab app.
The lab is also available via this QR code:
Once you have completed all five locations, you will have 5 sets of bonus clues, totaling 11 letters. Unscramble these letters to reveal the name of a famous man in SMU's history.
Put the 11 letters in the correct order into certitude for the final coordinates!
You can validate your puzzle solution with certitude.