Two Different Shopify Stores on a Main Domain and Subdomains - HELP

[larapretorius88]

I have spent hours trying to do this and I am not sure it is going to work or how to set this up.

1. I have a store that is 5 Years old based in South Africa. I have been using the main www.myshop.com domain.

2. I am opening another store in the USA - This store is USA Based and I have a separate Shopify Store for this business, I cannot use markets because I use Shopify Payments in the USA and there is a different bank account and it's a whole different business with different products and different Shareholders.

3. I have added a subdomain for the us store - us.myshop.com (This works perfectly)

WHAT I WANT TO DO: I dont know if this is possible.

I have a few blogs on my www.myshop.com domain that ranks high on google and the primary domain gets alot of traffic from the US, I dont want to lose this. I also want my blog etc to be on the primary domain.

I created a us market on my original store - the one that gets alot of traffic from the US - So that when someone from the US reads the blog they see the USA storefront, what I want to do is when someone in the US and Canada types in my www.myshop.com  it automatically redirects them to the us.myshop.com storefront and not the South African one and visa versa for the South African Store where I have now created a za.myshop.com subdomain.