My Plesk installation has gone off the rails after a recent update. RoundCube still sends and receives mail, but it refuses to let me create or save any filter rules. At the same time the control-panel interface throws random errors and the underlying web-server stack is unstable, so I know core Plesk components (web server and control-panel modules) are damaged. I’m looking for someone who can: • Diagnose and repair all corrupted Plesk packages and dependencies so the panel loads cleanly. • Resolve web-server-level issues (Apache/Nginx or both) introduced during the last update. • Restore full RoundCube functionality, with particular focus on sieve/filter rule creation and storage. • Bring the server fully up to date, apply patches safely, and leave no failed components in the updater. Acceptance is simple: the Plesk dashboard must open without warnings, all hosted sites must respond over HTTP/HTTPS, and inside RoundCube I need to create, edit and enable filter rules without errors. Root SSH access will be provided. Let me know how you plan to tackle the investigation, an estimated turnaround, and any similar recoveries you’ve handled.