Hello,
To solve “There has been a critical error on this website” – please enable debug mode in WordPress – https://wordpress.org/support/article/debugging-in-wordpress/ to find out what error appears on your site, it will point you in the right direction and what needs to be fixed.
“support not giving me solution” – we provide support for XStore theme, but the questions you previously asked were not related to our theme because you confirmed that the issue persists even with the default WC theme – Storefron.
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Best Regards,
8Theme’s Team