We upgraded to IPAM 2.0.1 a couple months ago. I just noticed that none of the subnet scans are running. A Manual request shows status "QUEUED" and the automated scans show "Next Scan: ASAP". I will open a case with support, but would like some pointers as to where to look for errors or troubleshooting suggestions.
No support request needed. The issue was DHCP server credentials. These credentials did not migrate over with the upgrade.