Global inbox & mobile sync icons disappeared

For some reason I don’t have my global inbox and mobile sync icons any more - but my own folders are still in place. Any ideas of how I get these back?

Are just the icons missing or the items themselves?

I had the same probblem. This was the solution:

Quit the sorter and then quit DEVONthink. Go to ~/Library/Application Support/DEVONthinkPro2. There You find a database “Inbox”. Rename the database to “Inbox-backup”.

Restart DEVONthink. In ~/Library/Application Support/DEVONthinkPro2 a new Database “Inox” should be set up. And in DEVONthink a (new) Global Inbox should be present now.

Open the renamed “Inbox-backup” with DEVONthink. Look for the content and move it anywhere. Delete the renamed “Inbox-backup”.