1) Never place translation files into the Author directory https://prnt.sc/gZZkroUSx7sp because you will lose your translation after a theme or plugin update. MOve translation files to the System or Custom directory https://recordit.co/Qwy5BKiogY
2) Translate all the missing strings in the XStore core plugin translation files https://recordit.co/pJyHJsB5kp
One standard license is valid only for 1 project. Running multiple projects on a single license is a copyright violation.