LightMen Flashlights Store review for Google & YouTube

The most pathetic app by Shopify! I used the earlier app and it worked like a charm, the new google shopping app is pathetic! PLesae someone take charge and rectify it. The products are synched with merchant centre, but the app doesn't update it. GTIN and images are perfect, but google cant find it, don't know how to Contact. Please someone with knowledge can get in touch to help?