Hello, Chafiedz,
Thank you for contacting us and for using XStore.
Please read the next article – https://www.8theme.com/documentation/xstore/theme-installation/how-to-registerderegister-xstore-theme-livestaging-websites/
According to the ThemeForest license policy, you can use 1 license for 1 project only (dev site, production site and/or localhost, but the same project), read more – https://themeforest.net/licenses/terms/regular If you want to use our theme for a few different projects you need to buy a few licenses. The further explanation you can get from ThemeForest support.
1. XStore can be utilized on one live and two staging sites.
2. XStore can be activated on multisite, as it is technically possible.
3. Consequently, you can activate it three times on a multisite, of which one will be live and two will be staging.
If you have any additional questions or concerns, please do not hesitate to reach out to us. Our support team is always available to assist you.
Kind Regards,
8theme team