Try to disable all the third-party plugins, that do not come bundled with the theme https://xstore.helpscoutdocs.com/article/36-included-plugins , and check how it works then.
Do you use the latest version of XStore theme and Core plugin?https://xstore.helpscoutdocs.com/article/63-theme-update https://xstore.helpscoutdocs.com/article/37-plugins-update
Regards
