We recently made a few tweaks to the software, Head to your online account and download/install the revised CB2023 program installer (v23.2.2.2665): https://www.comicbase.com/mycb/Registrations.aspx
Restart your computer afterwards.
Launch the main CB software, go the File Menu>File Tools>Optimize Database
lastly, run the content update on your database and see if you're able to get through it or not (internet menu>check for updates).
If you still have trouble, please contact the support team directly (support@comicbase.com).