Dear @Sarkis Kartashev,
We hope this message finds you well.
We kindly ask you to deactivate the XStore AMP plugin on your website, as it appears to be causing configuration conflicts with the WooCommerce checkout page settings. Please note that this plugin is not essential for the core functionality of your site.
If deactivating the plugin resolves the issue, you may keep it inactive moving forward.
Thank you for your attention to this matter.
Best regards,
Jack Richardson
The 8Theme Team