I use these https://www.amazon.com/dp/B0778TNKC6/ref=cm_sw_r_cp_api_i_ZVcADb8M4XC63

However it depends on the type of LEDs you use. Mine are cheap RGBW, so they work with this controller. RGBWW would need something like this:

LEDENET Smart WiFi LED Controller 5 Channels Control 4A5CH CW/WW RGB RGBW RGBWW LED light, Timer Music Group Sync Controller https://www.amazon.com/dp/B01DY56N8U/ref=cm_sw_r_cp_api_i_g1cADbS3ZW97D

What exactly is the issue with yours? Did you ensure they're cloud connected via the magichome app and not just in AP mode?