Somewhere within the app you should be able to specify the location of the relevant files.
When you moved the files you may have moved them from the default location.
Are you able to provide the app name and the associated file extensions?
In any case, go into the application and look for any configuration screens with settings.
Check and change (if necessary) any defaults that do not match what you have set up versus the defaults.
Many applications do not "like" to have the defaults changed - the specific changes necessary for doing so may be buried deep within the configuration settings and even use different terminology. Nothing obvious or intuitive at least.....