Only first led working

I have four stripes on my monitor (all chained), but only the first two work, the third has one dimm green light wen not configured in WLED and one white one when configured. When the LEDs are not in configured in WLED and then I configure them, as soon as I hit save the first two stripes work, but all oter leds (that fall in the configured leds) shortly flicker in random colors then turn off and only the first light stays white, even when wled is turned off.

SOLVED: Resoldering data line