https://k***eals.com/product/men-cargo-grey/?swcfpc=1 – when URL is like this all is fine. This parameter comes from Super Page Cache for Cloudflare plugin on your site.
Please follow our previous recommendations: 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 the cache of the browser and CDN cache, and check then.
Regards