The app is in your Applications folder and the Resolve connector is in place.
If Resolve was open, quit it and open it again. Then go to Workspace, then Workflow Integrations, then Earwig.
The how-to sheet is next to the app: Applications, Earwig Sync Read me.pdf. It covers signing in, matching your clips, the free version of Resolve, Premiere, and what to do if something is not right.
Questions: Talk to Support in the Earwig app menu, or earwig.io/sync.