JIRA uses a bunch of different plugins for supportability:

• Support Tools Plugin
• JIRA Instance Health
• Support Healthcheck

Those plugins shell be removed and replaced by one plugin Atlassian Troubleshooting and Support Tools (ATST)
Details:

• Marketplace page: https://marketplace.atlassian.com/plugins/com.atlassian.troubleshooting.plugin-jira/server/overview
• Plugin:
  • Description: Troubleshooting and Support - JIRA
  • Key: com.atlassian.troubleshooting.plugin-jira
  • Jar: plugin-jira-1.x.y.jar