Your use case is a recipe for disaster. From
the FAQsPlease note that accessing disk databases simultaneously using more than one software (including file-syncing services like DropBox) may compromise the integrity of the underlying project and configuration data.
Collaboration using a PostgreSQL database and project server is available on the free DaVinci Resolve 17. If you
really want to continue using DropBox for some reason, we advise exporting your database as a DRP and reimporting it between uses.
This means that only the DRP files stay on Dropbox and the main project files - including Project.db and other files DaVinci Resolve uses stay outside.