Matrix Creator Humidity Issues

Hello,
I’ve been using my Creator several weeks for measuring sound, temperatures, pressure and humidity.

Recently I got a MS430 from metriful and had the opportunity to use both, the creator and the MS430 in the same place. I figured out that my matrix device is showing way too high humidity data points.

They also jump from ~25 to ~78 from time to time, as you can see here: http://serverview.spdns.org/#!/1

As comparison I captured some data with the MS430 here: Admin

How can I recalibrate the Humidity sensor on my Creator device? Any help would be great.

Holger