error adding products to all markets

[LittleBigBikes]

Hi There

I just launched my site on Shopify in 3 markets with 8 products.

In the bulk editor it says all products are added to all markets. 

 

I have shipping setup in each of the 3 markets, like this .

  

But it will only let me checkout if I select the products to each market using the in shipping and delivery > manage products

 

 

The trouble is, when I add products to one market as above, it seems to remove them from the other two. For example if I add products to USA via the checkboxes, it will remove them from UK and Europe (see 32 items in USA and 0 in EU or UK).

So, I can only checkout from one market at a time. The other two markets get the error message 

No delivery available, this item will be removed from your cart because there are no delivery methods available for your address.

Even though it says in the bulk editor that products are in all 3 markets and all shipping zones are setup (and tested address is correct format).

Hoping someone can help me resolve this strange issue as I wish to launch the shop today! 

Many thanks,

S