Just activated the plugin – Pop up simply doesn't work

Hello,
I installed the plugin

-I can’t get the cross sell pop-up working neither below add to cart.
It actually worked one or two times in the beginning. now I’m changing all the option and impossible to get this pop up again. I tried several browser and it’s not coming from my popup blocker (deactivated)

-other issue when people buy an expensive product “on sale” then the discount goal is achieved. but as the product is already on sale there will be no discount. so this message shouldn’t appear.

Thanks for your able.