The upshot .... The "error" was in ignorance that you should shake the toner so that the toner powder which can sag quite, will be expanded again and so the transport is guaranteed to the role. No way with a bad product, all the best, this great fast service via email and phone.
So, do not equal return the goods, but seek dialogue, because you are helping! In most cases the cause is for function problems rather succinctly and not due to the quality of the toner ..... shaking, Frau Holle says hello :) !!!