Thank you for your quick reply .
I'm not sure as i can't read the cms but a couple of seo companies i have ask they told me that my cms is not correct ( for that i'm losing my good position in google ) and they want to make me a new sites !! My new redisigned site is 1 year and a half and i had excellent results as i follow the most i read in the forum.
I'm an amateur and i dont know the codes and the inside coding of my page . But i think the most possible of my droping in the results is my linking maybe on low quality sites and not my cms as the companies they want to SELL .