Link Shopify account to Amazon so that products appear on Amazon

I'm looking for someone who can link Shopify account to Amazon successfully such that Shopify products appear on my Amazon listing account.
It appears I was able to actually link the accounts successfully (you will need to check this first I'm guessing) but my Shopify products are not appearing on my Amazon account. May be something to do with product identification or something else, I really don't know.
I need someone who has done this in the past and knows what they're doing to apply not someone that first needs to troubleshoot to find their way through the problem.
This is an urgent request please only apply of you know what you're doing.