Can You Paint Over Camper Wallpaper. It just proves that you should never use a paint color without first trying a sample on your wall because the same color can look very VERY different depending on the location and lighting. Water based primers can moisten and sometimes lift off a porous substrate.
However wallpaper with a strong adhesive can be hard to remove. Apply the paint as you did the diluted primer. One if you want to take the paper down eventually its best to just bite the bullet and do that now.
As long as the underlying paper is adhering tightly to the walls and you disguise the seams the paint job will make the surface look like a regular painted wall.
Painting over it is no short-term solution. Take your time and be thorough with each phase. If the wallpaper is only peeling in one small area you could try just gluing it down but keep in mind that if you paint over the wallpaper and it continues to peel it might be harder to remove later. Ive started my kitchen renovation in my RV and the first step is the paint the walls.