@Ondřej-Šutera
Hi!
I have the same problem. One Netatmo account with two sensors in different places.

ID0: f056b639
ID1: 1f056b639

Both show sensor data from sensor 0

Netatmo sensor 0: https://weathermap.netatmo.com//?zoom=15.912286063592628&type=temp¶m=Filter&stationid=70%3Aee%3A50%3A58%3Ae6%3Ad2&maplayer=Map&lang=en

Netatmo sensor 1: https://weathermap.netatmo.com//?zoom=9&type=temp¶m=Filter&stationid=70%3Aee%3A50%3Aa4%3A7e%3Ab2&maplayer=Map&lang=en