Hello, @鄭竣丰,
We suggest that you try turning off the Speed Optimization Options one by one under XStore >> Theme Settings and then clear the cache of the site and browser.
Additionally, if you are using any cache or optimization plugin, please try deactivating it as well. If the issue persists, please provide us with your site’s WP Admin URL and credentials in the private content area of this topic, so that we can further investigate and assist you.
Best Regards,
8Themes Team.
One standard license is valid only for 1 project. Running multiple projects on a single license is a copyright violation.