I think there should be an option in the user permissions to only access a specific stores' reporting data instead of all the stores attached to Shipstation.
Agree, this seems basic and if you have permissions set it should apply to reporting visibility as well
This needs to be not just for reporting but for the whole permission set.
We need to be able to restrict access by store as we use store sets to separate out physical locations
Here to say that I agree, and need to add users to access just one store.