This error displays when the user.config or the shoppa.exe.config within the installation folder is incorrectly configured or cant be accessed or is locked by another process or user.
Please contact your IT-support for help and give them the information found within this article.
If Shoppa has been installed with the default configuration, you can find the shoppa.exe.config here:
C:\Users\[User]AppData\Roaming\Shoppa App
If Shoppa has been installed with the default configuration, you can find the user.config here:
C:\Users\[User]\AppData\Local\Shoppa_AB