I installed the app once, then closed it by accident. Now, I can’t find where it is. i tried reinstalling, but every other installation fails. What do I do?
Welcome to the community. 
WeMod is installed in the AppData folder of your PC. You can find the executable to make a shortcut on your desktop, start menu or task bar here:
C:\Users\YOUR_NAME\AppData\Local\WeMod
If WeMod is failing to download or was removed after being installed then your antivirus or firewall is interfering. This will help with that: I can’t Install WeMod / “There was a error installing the application” - WeMod App / Support.