Hello,
http://prntscr.com/upv339 According to the ThemeForest license policy, you can use 1 license for 1 project only (dev site, production site, localhost but the same project!) https://themeforest.net/licenses/standard
You used 1 license to activate the theme for 6 projects and it’s still active at https://medicamentosmagistrales.com/ . You need to buy a separate license for the new project if you want to use XStore.
Regards