If links are not being processed and you're not getting email reports, then most likely you have problems with your cron job. It is either not set up or doesn't work. Proceed to [studio -> dashboard -> host tools -> server audit] and check the cron jobs section, especially the "Last cron jobs execution" row.

The cron job supposed to be installed during UNA installation. It is the final step of its installation process right prior to deleting an "install" folder.
You can learn more by following the links below:
https://una.io/page/view-article?id=8
https://una.io/page/view-discussion?id=3889