I am getting the "No associated device found" and when standing on the magnifying glas to the right of "open full editor" i get the message: "no device found, serial port unavailable".
Did you update the "connectivity module firmware on UNO R4 WiFi1? Check Update the connectivity module firmware on UNO R4 WiFi.
Delete the board as a device, then do this update, make sure that the Create Agent is running , add the device again as a device and then associate it with the thing created. Note: Make sure your machine does not have USB issue, that it, it recorgnise the board.