Ring Chime Gen. 2 - Wifi Deurbelgong
It was difficult to get it connected to the WIFI. I needed to reset the KPN router to factory settings. Then it started working. IT was possible to return to the desired WIFI settings. So probably the root cause is in the KPN router (©2008-2020 ZTE Corporation. All rights reserved | V1.01.00T03.8V3). Maybe this helps others with issues. Once this was "cracked" the chime works perfect. Changing the ring tune works OK, but is quite slow. Still, the device works very good now.