Suddenly my sceens stoped working thru smartthings hub

OK so my problem ( I’m a new user of HA so …)

I have a couple of scenes that activate lights in my house. The main light I activate thru KNX and they work just fine. But the small window lights wont turn on and they are connected thru smartthings hub. (IKEA bulb)
I can control them by klicking on of i the device meny and google home can control them …
Last week it was working just fine…