Hello,
XStore is still active theme for the following projects:
http://magictripbali.ru https://prnt.sc/wjscf2
http://art4you.online https://prnt.sc/wjscse
http://secrets.angajement.ru https://prnt.sc/wjsd4w
Read the ThemeForest license policy https://themeforest.net/licenses/standard :
You are licensed to use the Item to create one single End Product for yourself or for one client (a “single application”) (the End Product is a customised implementation of the Item.)
So, deactivate and remove theme from these sites to be able to use it for another project.
Regards