So here is the review. The 21energy oven pro has arrived, safely packed. It is a solid and well designed heater. Connecting to the internet and app and also to the suggested mining pool (brains) is easy. Technical support which I asked for some things during the installation is very kind and responsive.

I really like it!!! It is very silent, quieter than my heatbit.

Runs with 43 TH/s at 990 watt. First SATs are mined. And most important, my wife likes it, too!!