You can connect only one account for each of the five Amazon regions:
Amazon North America
Amazon Europe
Amazon Japan
Amazon India
Amazon Australia

So you can see your sales from all five regions in one view. 

If you manage more than one account from the same marketplace, for example two accounts for Amazon.com, you would have to create a separate Shopkeeper login for each. We currently do not support multiple accounts for the same marketplaces. 

p.s. We are considering building multiple accounts feature soon, which would all work via one login. If you would be interested in this feature, please Vote for it by selecting the happy Smiley face below: