Originally set up a new networking device and was getting good readings on its sensors. I ended up deleting the device to do some experimenting/change a few settings, but now it appears I'm not able to add it back.
Auto-Discovery only creates a Ping sensor. I cannot create an SNMP Uptime sensor manually. However, I can retrieve the uptime from the SNMP Tester. Additionally, I have successfully added an additional "Device" that is another r-bridge in this chassis, which is successfully being polled. These two Devices share an identical configuration (the remote configuration). Both devices also share the Inherited SNMP configuration on the PRTG side.
I've tried clearing the cache and restarting the Core service, but haven't had any luck. Any suggestions are appreciated!