Is there a way to recalibrate the temperature sensor for the ITC-306T?

Hi, my ITC-306T started to show me a temperature of ~85°C in my ~20°C terrarium, where it used to work properly for a few years (24°C, high air humidity). Is there a way to recalibrate the sensor (beside the ±15°C range in the settings?
Only the metal probe is inside the terrarium, the controller itself is in a normal room environment.

Best Regards

Please check if the probe and cable are in good condition?
Please clean the probe and cable, then use a hairdryer to dry the probe, then test the probe in the air temperature, can it read correctly?
If no, please contact, please provide your order details and attach a screenshot of this post.