I am quite new to Shopify - so I am pretty sure I must be doing something fairly silly here - anyway I do hope you can help!
I am trying to create a Facebook Campaign, I've set up my Facebook Business Manager account and filled in all the required fields at Shopify end. Every time I do get the following error:
Having had a look at the Business Manager end I can see the campaign is being created but has no products. I would appreciate any help!