Do you have a Home Depot or Costco near buy that offers free installation and haul away? Most people who get these appliances have the store do all of the work you did.
On the dishwasher, they had a hard time routing the hoses properly, so the unit was sticking out something like 3 cm from under the furniture. I had to redo it myself.
On the washing machine, they routed one of the pipes with too narrow an angle, so that the water wouldn't come out. Fortunately, to the point of this post, the machine was "smart" enough to figure this out and complain about it (via a code on its display).