IBBQ-4T probes will not connecting securely

The controller connects and functions with my WiFi. The probes themselves will not register reliably when plugged into the IBBQ-4T.
Is this a known defect of the unit?

Hello,
Please check the insertion status of the probe through the back of the IBBQ-4T.
please make sure there is no gap between the probe and the port.

Yes. It is plugged in all the way, but it doesn’t stay in. Even while being absolutely still, it doesn’t maintain secure contact. Do you have any suggestions or have others reported this problem with this particular unit?

Maybe you could try pushing the probe plug in harder? It is required to use some force.
If the plug is loose, it is not fully inserted.
Maybe you could refer to this video, starting around 1:40