[Observium] Can't Add Device

Trying to add my secondary trunked switch, but I get this error

"Could not ping switch2.mydomain.com."

I ran a DNS lookup on that hostname and it shows the records fine and the switch (#2) accurately. I tried adding the device using the same setup as the original switch that's already there: port 161, udp transport, v2c protocol version, snmp community same as primary.

I can ping the hostname too, not sure why Observium cannot.