Vianney Home Decor review for Google & YouTube

Good Morning, I need to be able to change the GTIN because is rejecting all my products for that. The google category is not that cool, not complete. The merchant center link is not clear. ONE SUPER IMPORTANT THING IS LABELS, WITHOUT THEM I CANNOT MAKE MY STRATEGY GOOD. Many things to improve, hope you hear this comments because this is one of the first sales channels. Thank you.