I don't know what I did ,then the node tree disappeared,
Any one can help me ?
TKS
no one knows ?
I've seen this before, but it was in earlier version 9.1.
I would try updating to latest SP or 9.5.1, and/or open a ticket.
They have moved that functionality in 9.5.x to the web but the nodes should still show up.
Make sure that the DATABSE records have the correct polling engine in them. You might have a new polling engine and the numbers are not the ones in the DB. I've bee here before and SW helped me out of that one.
On the Web Console I could see the correct status of the Polling Engine;also use the "Monitor Polling Engines" I could see the correct status too.
Should I use another server to install another Polling Engine ?