The store name does not change the store url as it uses the username not the store name. How can this be changes to use the store name and secondly how can we ensure that the store name chosen doesn't already exist?
you could not change user name. it's wordpress by default rule.
you could change store name not url and store name could be same.currently there isn't any feature like this to check unique store name and we have no plans for this feature yet.
Me too, I'm interested in this feature. The store slug should be editable as the shop name is.
One thing is the shop, and another one is the user. We use the buddypress plugin n our site and we make a big difference between them.