Plugwise Stretch 3

Any of you got a working solution for the Plugwise Stretch 3 ?

I’ve been running Homey v2 from day one, had installed the ‘old’ v1 app for the Plugwise Stretch 2 app, and it work perfectly fine (and stable with any reboot ever since first boot). Unfortunately my Stretch 2 died a week ago, and when changing successfully to a Stretch 3 (within 10 minutes including the wall-mount!) I tried to add the Stretch 3 to the v1-app for the Plugwise Stretch, with the repeated result: An unknown error occured [unknown_error]

I’ve already raised a request for the Stretch 3 apps some time ago… No app available yet