The Waze app will not use a new or modified Waze house number if it already has the corresponding address in its navigation and/or favorites lists. The user must remove any existing instances of an address before the app will obtain new position data for that address.
By the way, a UR reporter recently complained that he had waited six months (!!!) for an address fix made by another editor to work, and it hadn't. I suggested he remove the address from the app and load it in again. A few days later -- "yay!".
But what a shock. I always assumed that the addresses stored in the app had some kind of time-to-live. If they do, however, it is apparently longer than six months.