GCinOHIO planned a Luau
played
Today I accomplished this WIG using an Android Tablet with WhereYouGo App. I completed all the stages, received congratulations and a completion code (with which I was able to unlock the cartridge), but at no point did it tell me where to look for the physical cache. I even re-did the last couple of stages just to be sure. Perhaps it's an incompatibility issue. Anyhow, since the cartridge is now unlocked (i.e., complete), I respectfully consider this a find since I accomplished all tasks presented to me.