Hello,
1) Provide URL of your site and temporary wp-admin access.
2) Try to disable all the third-party plugins (including cache plugins), that do not come bundled with XStore https://xstore.helpscoutdocs.com/article/36-included-plugins , clear cache of your browser, and check how it works then.
Please note that we do not give a guaranty for full theme compatibility with all existing 3rd party plugins.
Regards