Problems adding fibaro dimmer

Anyone experienced problems adding fibaro dimmers? (FGD-211, if I’m not mistaken - it’s the old Dimmer1). I’ve just added three of these with no problems whatsoever. This one has been working fine in Vera. I’ve had my Homey as close as 20cm from the dimmer while trying to include it. I’ve also tried removing it under settings | z-wave.