Z-Wave devise, not able to include after exclusion

I excluded the devise (dimmer), and later I am trying to include it again. When scanning the QR code I get the message “The devise has been added…”. When turning on the light, still nothing happening, it does not show up in HA.

I suspect something went wrong when excluded and some old data messes up the new inclusion.
How do I decrapify the old data, so a new inclusion can be done?

Restart everything. I find HA can get confused when a device is removed.

exclude again, factory reset switch, include switch again