Hello, @sanxuan,
I have checked your site and the screenshot you provide us. When I check your site by login you activated the Woodmart theme, not our XStore theme I activate the theme and then I check the plugins on your site there is no AMP plugin installed and activated on your site. See image: https://postimg.cc/DJypXgCY
Are you working on your site? did you change the theme and disable/delete the plugin?
Regards 8Themes Team.