Ewelink keeps saying "Error please try again"

Hello, Now I’ve searched for half a day and reset until my fingers have become sore. I have a Zigbee Din Dimmer and a Zigbee Gateway 3.0… It all finds each other but I just can’t get it to work as intended. The light turns off and if I want to turn it on again I need to hit the Dimm slider to 100%, when I want to turn it on by pressing “on” it says (Error please try again) I can turn lights on and off with a voice command via google. But google and ewelink keep saying there is an error and that I should try again. The light is shown as off in both apps even though the light is on… What am I doing wrong?