[SOLVED] Product attribute not updating on front office - PS 1.7.2.5

[Uchiwayas]

Hi, 

this is how my product looks in the backoffice : image 1 - image 2 - image 3

and this is how it is on the frontoffice : image 4

when i press the red or black buttons to change the colors nothing happens to the product page   the only thing that happens (which is weird) is the URL changing from this : image 5 to this : image 6 when I press the red button. It says "/11-couleur-noir" which translate to "/11-color-black" even tho I pressed the red one. 

tell me if you need more info about this,

thank you.

the website is https://protection-de-la-maison.fr/

update : I realised that the product shows correctly in the cart, there is something wrong with the product page only.

Edited March 5, 2018 by Uchiwayas
solved (see edit history)

[Uchiwayas]

Fixed : 

the URL rewriting for the product somehow changed, so I had to put it back on {category:/}{id}{-:id_product_attribute}-{rewrite}{-:ean13}.html

I'm leaving this post in case someone else has the same problem.