Please inform user about Vignette condition and effect on the routes (in Switzerland)!

I am an avid fan and frequent user of waze. literally anywhere and anytime I am planning a route I use waze, and I always suggest and inform people about its benefits. But Yesterday we had a very bad experience using it.
Our trip was from Vaduz to Grindelwald (Switzerland)
Waze always alarms about C- Zones, Toll roads at the beginning of choosing the route, ... and it did the same about vignette but the confusing thing is that it did not say that we have to select our type of pass from the list to avoid narrow and minor roads.
My assumption was that it is just an informative alarm like always, so as we already had our vignette pass we ignored it. but now am sure that the assumption of the app was that we do not have it so it should provide us with alternative routes. Which was much longer, minor roads and also country lanes( which barely 2 motorbikes could pass each other), extremely hazardous, especially in rain and fog condition, which very much endangered our lives. The level of stress we experience was very unnecessary as from yesterday till now we are dealing with the fear and we cannot enjoy the holiday we planned and paid for.