SIngle product page not opening, getting redirected back to homepage

I optimized my website to increase speed by adding Autoptimise and xml sitemap.

I was using custom made single product page by elementor pro and I uninstalled it today to replace it with shoplentor free verion.

everything was working fine before but now the product page is just redirecting to homepage, I tried reinstalling elementor pro but it didnt work, I tried inactivating all the plugins but it shows PAGE NOT FOUND.

Nothing is working, cant find anything on google or youtube or any forum I am really worked up.

PLease look it up and help me.

The page I need help with: [log in to see the link]


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