Temperature Sensor Addon for Shelly 1/1PM

Hi,
I would love it if i can add the new temperature add-on in the shelly app.
With this add-on u can use DS18B20 temperature sensors on the shelly 1/1PM, for now it is max 3, but will be more in later firmwares.

How can i contact Jelger Haanstra (created shelly app) for an request?

Thanks!