The warning message "Following permissions are not allowed in the subscription, or service plan: Hosting settings management" indicates that the ability to manage hosting settings is restricted for the subscription or service plan associated with the website or hosting account in Plesk.

Hosting settings typically include configurations related to the server environment, such as PHP versions, web server settings, security configurations, and more.

Here are steps you can take to address this issue:

1. Contact Your Hosting Provider or Server Administrator:

   • If you're not the server administrator or the person who set up the subscription or service plan, contact your hosting provider or server administrator. They will have the necessary permissions to adjust the settings for your subscription or service plan.

2. Upgrade Your Subscription or Service Plan:

   • If you have the required permissions, modify the subscription or service plan to include hosting settings management. This might involve upgrading to a plan that offers more flexibility and control over server configurations.

3. Check for Domain-Level Overrides:

   • There might be domain-level overrides in place that are preventing you from managing hosting settings at the subscription level. Go to the specific domain settings and check if there are any custom configurations defined.

4. Review Service Plan Permissions:

   • If you're an administrator, review the service plan settings in Plesk. Ensure that the option to manage hosting settings is enabled in the service plan associated with the subscription.

5. Check for Restrictions in Plesk Extensions:

   • Some extensions or additional tools in Plesk might impose restrictions on hosting settings management. Check if any extensions are installed that could be affecting this.

6. Contact Plesk Support:

   • If the issue persists and you're unable to resolve it, consider reaching out to Plesk support for further assistance. They can provide specific guidance based on your setup.

Remember to exercise caution when making changes to hosting settings, as incorrect configurations can potentially lead to issues with your website or application. Always back up your data and configurations before making significant changes.