Some elements like Tools & Settings or Additional Apache & nginx Directives under Apache & nginx Settings are missing in Plesk Interface and it is not possible to configure the things as described in Plesk Documentation and follow many suggestions by Plesk Knowledge Base because of that. Why is so and how to deal with it?
The interface looks like this because the account in Plesk does not possess admin privileges. Due to security reasons, some tools in Plesk are available for Plesk administrator only. In case you require some functionality available in the tabs that are missing, contact your server administrator or hosting provider regarding this matter.
Should you need help identifying who your hosting provider is, please use this link, or check your accounting records to find who you pay for hosting.