I assume you don’t have the product key installed. But if you have no active projects/notebooks/areas, then it’s a bug. When did it start?
Is it possible for you to share you database file? It’s located in the data directory of the app (see Data Directory | Everdo Help)
If you can, please send the db file to andrei@everdo.net. If not, try renaming the database file and restarting the app so that a clean database file is created.