Products arange problem

Hello,

I have a big problem at my website after 3.0.5 woocommerce update. My products is arrange totaly wrong in shop page (check here: https://www.afy.ro/shop/). Some of out of stock products is showing even if I set not to show out of stock problem. And one more big problem is when I get an order for a products who has, let say, 2 pieces in stock, the order is for 1 piece, and my automatic stoc go to -1!!??. What is going on??

Thank you!