Stopped receiving events on Node-Red when multiple configuration is set

I have a setup where I have a separate Node-Red server, an iHost and an NSPanel Pro. I set up the token connection with the iHost and it was working fine, I got the device events. Later I set up a token connection for NSPanel Pro. I did this a few weeks ago. Now when I wanted to use iHost again, I noticed that I no longer get the event messages from iHost. I ended up deleting the configuration for the NSPanel, iHost and created the iHost again.
Now everything works.
So I was wondering if there could be a bug if multiple configurations are created in Node-Red. Like to multiple iHost or iHost and NSPanel Pro.

Do you set static IP for your iHost and NSPanelPro?
if their IP change, you may need to refresh the token