Self Adhesive Wallpaper Border

Disney High School Musical 2 Self Adhesive Wallpaper Border 5M
Model: HSM052
# 5 metres (16.4 feet) long, 23.5 cms (9.25 in) high
# Readyroll Self-Adhesive and Removable
# Border can be moved without marking surfaces
# Features all the stars from Disney's High School Musical
# Colour: Various

Cosmo Girl Glam Wallpaper Border-Self Adhesive
This border can be used vertically, horizontally or diagonally. Can be used as an accent piece or continous border. Covers a total of 9 feet; consists of 3 sheets, 8 in wide by 36 in long. The edges of this pattern are wavy.

* Self-Stick
* Washable
* Peelable
* Vinyl


Width: 5 yards
Height: 5 in
Per: Spool-9 feet

How can we fix self-adhesive wallpaper border that lost it's adhesiveness?
The wall is plaster that was sanded where the border was applied so the surface would be smooth and level. The surfance is still a little rough since it was hard to sand it perfectly flat. The border stayed up with the original adhesive for almost a year before it partially fell down recently. I have seen a brand online called Prepz by Zinsser, but I could not figure out which of their adhesive products might work in this situation, or if there is something better that might work, too.
First answer is a good option I'd like to expand on.

There are water based, less toxic spray adhesives,,,perhaps even from 3 M.

In the process you should mask off areas that you want to keep clean,,,,Spray adhesive also acts as a dust collector after the fact.

Spray into the area of non adhesion,,,perhaps on both surfaces where possible to act as a contact cement process, and gently roll with a paint roller, or soft cloth, dry sponge, over the area.

Zinzer is a quality product, and research is the best option,,,IE: READ LABELS.

Rev. Steven