product not sync to google merchant center

[moav0508]

Misssing Mpn Number 
i checked as a Custom Product

but it still doesn't work

Can you help me fix it? 

[ddq]

same issue here. 

But when i uncheck the custom prod, save, recheck the custom prod field, its working.  (in the product page)

and when i want to modified in the bulk editor the custom product column, the dropdown does not respond OR its empty

[EmmanuelFlossie]

I recommend you contact Shopify support to help you. The free app is not great and very limited. I personally never use it for my clients.