WYZE Bulb - no pulse

Just now trying to pair my new Wyze bulb with the app … turn the light switch on/off 3 times, NO pulse … tried multiple times … ideas?

On your phone turn off mobile data. Make sure your phone is on the 2.4 gigahertz Network.

Got it to work … turned the light switch on/off 3 times and then on again … started to pulse …

thank you for the hint!