I joined the group last June

I made several mandates in lots sectors of activity

Super !!! and very interesting some more profitable than others but on the over whole is OK.

Present the new opportunities are absent. 

What becomes interesting are the opportunity route a gas station, a pharmacy for groceries on the same route 

 Can we contribute to the growth secret shop ... ?

I think it will pick up as you see different companies needing to be evaluated.

True! And as more companies transition to using iSecretShop, more opportunities will become available.

ANY suggestions on different companies for mystery shopper

about face might be good

You could just wait it out to see if more appear here too.

If you want a huge list of companies, check out the MysteryShopForum. They have a list of about 200 MSC's linked at the bottom of their forum pages.