Below are a couple of things you can try.
FAQ 4707, sometimes documents will get stuck in the scanner temp folder. Clearing them out should resume normally functionality of the dw scan app.
If DocuWare OCR Toolkit msi is not installed on the user's machine, scans will take a long time to process before they are ready to be uploaded to DocuWare. You can verify if the DocuWare OCR Toolkit msi is installed by navigating to c:\windows\installer, sort by Subject, scroll till you get to the DocuWare msi' and look for DocuWare OCR Toolkit Setup. If it is not there then please reinstall the DocuWare Desktop application.