I have no idea what tool that screenshot is of? or why the IP address is in the Device Network ID field.
Did you set it there? The device network ID field is for something different, and should have been set automatically to something like this on device creation ‘harmony_bridge_v2_1’. If you have changed that using some tool, as screenshotted above - I suggest you delete the devices and start again. It’s important that field is not changed, changing it could cause duplicate devices to be created.
You need to get your harmony IP address from either the harmony app, or your internet router. You need to make sure the address is reserved on your router, so it doesn’t change in future.
Once you have the IP address, you need to set it in settings for the bridge device using the harmony app.
Edit: I can see that is a screenshot of the IDE, that is for legacy devices and you definitely do not enter the IP address there. Delete the device and start again, configure the IP address in the samsung app as per the above screenshot
Not sure what guide you are following but you should not be using the ide. The ide is not for edge devices
You should be able to setup and connect this completely from the mobile app. Is the mobile app what you used to configure the IP address? Are you sure you used the right ip address? What does it say on the history tab in the app
There’s been no recent changes to the driver, so I expect this is something local to you.
Given this is impacting both hubs, I would start with checking the smartthings hub and your network.
Start by rebooting everything in this order.
Harmony hubs - allow these to come back up and check their IP addresses
Then make sure your WiFi hub / mesh system is not blocking anything. Check to see if WiFi isolation or iot security hasn’t been turned on. This would block direct device to device comms on your network. These might be called different things on your WiFi router/mesh
Try reconfiguring the driver to wrong IP, then change it back to the correct one too.