Hello there. 
First of all, make sure WeMod is added as an exception in your antivirus program.
Instructions can be found here: "Wemod failed loading the cheats into your game" / "We’re having trouble downloading the cheats" - #2 by Ravenfyre
If they still cannot be located, close all WeMod processes via Task Manager. Then see if re-launching WeMod as administrator (right click > run as administrator) makes any difference. This is because WindowsApps, the location Windows Store installs its games, is a hidden file.