Osram smart+ flex 3p multi colour uk

Help.

Device enrolls with homekit fine when code scanned.

Tried reset. 5x power cycles causes light to blink successfully and homekit can no longer see device.

Trying to add with smart things. Nothing found.

Lights are in bedroom.

Tried to take hub upstairs to pair without ethernet then do a zwave repair. No luck.

Tried bringing light box without strip down to hub whilst plugged in to ethernet. No luck.

Advice please.