You are welcome.
1) Don’t rename the parent theme because then you’ll have a problem with the autoupdate. If you rename the theme then you need to update theme manually via FTP every time we release an update. In your case, you used the latest version of the XStore core plugin and old version of the theme. It was the reason of the issue.
3) We don’t speak your language, so we can’t translate theme and plugin for you. I just uploaded translation files with the partial translation that we got from another client. So, to finish translation go to Loco Translate > Themes > XStore theme (Loco translate > Plugins > XStore core plugin), edit the translation and translate missing strings.
