Hello, I'm a beginner and am not sure what I don't know here. We want to have an app in our cloud environment that can communicate with a raspberry pi located in the field. It will be wired to a RUT955 to reach 4g network. Our cloud environment is on an existing wireguard network. Do we need to add the pi as an external client to the wireguard network or do we need to add the router or both? I've tried both and neither seem to work, but I think I may not be doing the right thing. Any tips or links would be much appreciated!