Problems with thermometer HomeKit connection

Hello everyone, I’m having a problem with my QingPing thread thermometer.
When I go to “HomeKit device integration” and then select “Add entry,” I find the QingPing thermometer. I am then prompted to enter an 8-digit HomeKit code. I do this, and HA tries to connect to the device. However, I get a message saying that the device is already connected and cannot be connected multiple times.