Hello,
Thanks for using our theme.
Have you did any changes in files that may affect it?
Update the theme – https://www.8theme.com/documentation/xstore/theme-installation/theme-update/ and Core plugin – https://www.8theme.com/documentation/xstore/plugins/plugins-update/ , clear cache and check how it works then.
If this doesn’t help, try to disable all the third-party plugins (including cache plugins), that do not come bundled with XStore https://www.8theme.com/documentation/xstore/plugins/included-plugins/ , clear cache of your browser, and check how it works then.
Let us know the result.
Regards