O Chris that doesn’t sound good they haven’t sent you lowering springs have they?
mines booked in for the 4th of June to have the 25% stronger ones from auto jap spares fitted I’ll let you know if I have the same issue
where did you get yours from ?
also do you have old springs still ? if so you could get the measurements from them and possibly the fit helper springs but I’m not sure if that would help if you have fitted the lowering springs as they are designed to assist the springs with the heavy weight to stop it lowering the ride hide not increase existing ride height the ride height