I got it solved.
Now if someone needs help on this, you should do the following:
1. Install Woo Commerce and Shopify pluggins
2. Set up Shopify pluggin to link the button to “cart”… as no other option will get the Shopify Connect pluggin to work. (do not select “checkout” or “modal product”)
3. On the product creation page, just generate the embeed code but you do not need to copy it and embeed it on the description page, it will get added automagically under the Categories and Tags text.
Youre done.
Thank you again guys.
I forgot to mention that the buy button gets duplicated
thnx and great pluggin