Question
Is it possible to prevent a ticket from closing after 28 days in a solved status?
Answer
No, it is not possible to prevent a ticket from changing to a closed status after spending 28 days in a solved status. This is a system rule that can not be adjusted or altered through the use of automations and triggers. For more information, see the article: About the system inborn ticket rules.
Note: If you have custom ticket statuses activated, tickets retain their custom ticket status after they are Closed. For more information, see the section: Solving a ticket with a custom status.