I have 2 buttons, 1 is to open google maps and the directions to the address, the other is for Waze to do the same thing. The google maps one works PERFECTLY, but the waze button only opens the app, ...
Scroll down to the section about navigating to a location and how to use Waze Deep Links. It looks like there are multiple ways to do it, either by address or by coordinates. There may be other ways but this seems to be how they want you to do it.