Hello,
1) Try to delete the Scroll plugin, and install it one more time using the archive from this page – https://www.8theme.com/downloads/ 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 browser, and check how it works then.
Regards
