Hi guys, I have come across this problem few times now. This is preety common with upgraded deployments. If your workflows are not firing or your data imports are not working and asynchronous services are running properly. Then what's the problem?
The problem is there is an entry missing in your mscrm database.
To fix this problem update column AsyncSdkRootDomain to servername:port
(crmserver:5555) in DeploymentProperties table.