Hello @MAHDAR,
To disable the Advanced product stock on the product page, please navigate to XStore > Theme Options > Woocommerce (Shop) > Shop Element > Advanced product stock > Enable Advanced Stock > Turn OFF and save settings. For a better reference, please see the image provided here: https://postimg.cc/5YJyq8PQ
2) In order to better understand your issue and provide you with an appropriate solution, we kindly request that you provide us with a screenshot of your issue. Additionally, please provide us with the URL of the product having the issue.
Thank you for your cooperation.
Best Regards,
8Theme’s Team