I try to figure out how to sett all led in strip to the same color
When I activate the button 1 in the app.
I can control the first led and it follow the color I choose
Led number 2 is also changing color but not the same as led number 1 and the same for led number 3.
The only color I can sett to same on all led is white.
If I choose button number 2 or 3 nothing is changed
Amy ideas how I can do this ?
The LED strip is a ws2812b.
Regards
Andreas
Sounds like you have a hardware problem that needs to be fixed. See here.
Does the whole led strip glow solid orange on boot up of the controller?
If so this is a is a good sign that the controller is programmed correctly. Make sure all your led settings are correct within the app. Check all power connections and ratings and keep the data line as short as possible for initial testing.
I have try 2 different led strip and 2 different nodemcu, same problem 
You should answer the first question. 
When i flash a new nodemcu and restart it the led lights up ( short led strip with only 6 led ) but not orange.
led 1,4,7 is orange
led 2,5,8 is light green
led 3,6,9 is blue
The version i use is WLED_0.10.0_ESP8266.bin
The cables is around 10cm long.
I just try to flash a Wemos d1 and the same color again
It sounds like either the strip is hiding a warm white or other white led, or the strip is defective.
For testing purposes, select just red for the entire strip.
Do all LEDs light up? Are they all red?
Do the same for green, and then again for blue.
Perhaps post images of the strip with all red, all green, and all blue?
How are you setting the color? Using the WLED web interface? What button 1 / 2 / 3?
The problem is solved.
The strip was marked as a WS2812B, when i read the comments in the web shop people find out that is was a SK6812.
When i set active the 4 channel i n the config page it work as it should.
Regards
Andreas