Problems controlling FUT014 light bulbs over FUTD01 transmitter with DMX

Hi,
I have bought a FUTD01 transmitter to control FUT014 light bulbs over the DMX out of my DMX Dimmer. I tried it with different software programs (Chataigne, QLC+ and LightKey), sending it over a Enttec Open DMX Interface. I’ve confirmed correct DMX addressing (D001) and successfully paired the bulb (green blink confirmation) across several zones. I purchased the unit from a Dutch distributer. The data seems to be transmitted because the LED on the transmitter is lighting up when I open up the channels, but the light bulb is flashing different colors, not keeping a static light signal. Further, the bulb also flashes lights, when I open up different channels that don’t belong to the bulbs address.
Do you know what is wrong or can help me with this problem?

Thank you very much and many greetings,
Charlotte