Sometimes it is necessary to reset ScanLister. Here's how to do this without losing your settings. This is for Windows.
First determine whether you are using the Desktop or Microsoft Store version of ScanLister.
1) Go to Control Panel - Programs - Uninstall a Program - Find and delete ScanLister.
2) Then re-download ScanLister here
Microsoft Store Version
1) Go to the Start Menu and locate the ScanLister App
2) Right-Click and select Uninstall
3) Redownload ScanLister here