Yes nothing to do with EngineID when using V1/2 .
Try below steps isolate the issue.
I would like you to run the following 3rd party tool on Orion server desktop and see if you are able to see the NodePlease download
Add the ip address of the device
Select a Read/Write SNMP Credential: (Use SNMPV2/V1 )
Select "Create /Edit Credential"
( Create a New One )
Type the Community String
Click " Get"
Confirm you are able to to see the interfaces ?
////// RealTime Bandwidth Monitor Tool //////
You can also try the FREE "SolarWinds" RealTime Bandwidth Monitor Tool"
(Use the same Technic adding device with SNMP V3 and confirm you are able to see the interfaces for the node )