Wallpaper is Hard
Many home improvement projects are not hard but we hire professionals because they have more practice at it. Hanging wallpaper is hard. Especially the part where you have to align the pattern. That is the reason to hire a professional.
But when a professional cannot align the patterns you wonder if there is something wrong with the wallpaper. In our case, there was something wrong with TWO professionals. We will now be painting both bathrooms.
Hiring someone to paint both bathrooms.