That might have needed a heads up in this forum.
Apparently i used the KAKU app for my ACDB-8000A.
And then the app disappeared en the doorbell stopped working (annoying)
Adding the doorbell worked but added 2 devices. And the old doorbell driver started working again.
Deleting the three devices and wanted to ad the device again.
No way the homey is detecting the device.
Restarted the KAKU app. That did not help.
I had to restart the Homey… to ad a doorbell.
Strange. I got it working, but if you run into the same thing, Reboot like it is a Windows machine.