Sync not possible any longer

I tried DT3 and synced my databases with my Dropbox SyncStores. After this syncing databases with DT2 on two computers does not work any longer. What can I do?

It is **not ** wise to mix your DEVONthink 2 and 3 data. It is best to run 3 on a separate macOS account with test data or copies of data.

I suggest you remove the DEVONthink 3 application then go into your Dropbox account online and remove DEVONthink Sync from Settings > Connected Apps. Afterwards open DEVONthink 2 and select the Dropbox sync location. It should prompt you to authenticate access to Dropbox. Then see if it behaves as expected.

Thanks. Unfortunately it does not work. So I’m syncing again with a new SyncStore.