Lifx Z Strip flashing

very new set of lights. has been up for a few days working fine, now the second string is flashing through a range of colours white/blue/purple/green/red. First strip is able to be controlled through the app and change colour, I am able to turn the whole strip off though. Second one is just doing its rainbow dance when its on. Frustrating. Have done the factory reset. rejoined the network. Have switched their position and the ‘faulty’ string just makes the second one do the rainbow dance. Any help appreciated.

Contact support and get it replaced.