would recommend restarting your computer and see if that helps.
If not, uninstall the ComicBase
Download/install the revised CB2024 Express program installer from your online account here: https://www.comicbase.com/mycb/Registrations.aspx
Start up the software afterwards and see if that helps.
If you have further trouble, reach out to the support team directly at support@comicbase.com OR give them a call 408-266-6883