[SOLVED] How to show Old Prince and Price with Reduction on product page

[ezakimak]

Hi,
I've attatched two images to explain better my issue.
I have two prestashop installations , one for development and one for production , customized by a person, which is no available anymore.
The thing is that I have realized there are some differences betwen this version, and I am trying to sync both of them, now I am facing this particular one. As you'll see in one of the images, you can see

- the "on sale" logo +

- the price with reduction +

- old price + a text saying "reduced by %" ,

in the other image , you'll just see the logo + the reduction price

I am trying to show all those lacking information too but I dont know how to procede, at first I thought it was a template modification issue, so I copied the entire theme dir from one install to another , but the problem still persist, so there must be another files to copy or modify
if anyone here can give a hint, i would really appreciate it

thanks