APM Insight monitor is UP, but monitor page doesn't show any data
Possible Causes
The APM Insight monitor status corresponds to the respective agent folder pointed Java Application status i.e., as long as the Application server is running, the monitor status will be UP.
1. No Transactions Recorded: It is possible that the application being monitored doesn't have any transactions in the selected time window. In such cases,
perform some transactions and check after some time.
2. Unsupported JVM/JDK: Your application might be using an unsupported JVM/JDK. Kindly check the list of supported JVM/JDK.
3. Unsupported Applications Server: Your application might be using an unsupported Application server. Kindly check the list of supported Application servers.
4. Unsupported Components or Frameworks: Your application might be using some unsupported components or frameworks. Kindly check the list of supported components and frameworks.
5. Unsupported Database: Your application might be using an unsupported database. Kindly check the list of supported databases.
6. Adjust Time Window: If older data is available but not collected due to no recorded transactions, extend the time window to a period when transactions were expected. By default, you can view the last 7 days of data for APM Insight applications.
If you are using an unsupported elements (JVM/JDK, application server, components, frameworks, or database), drop a word at appmanager-support@manageengine.com with following diagnostics:
Contact Support with Diagnostics
If the issue persists, Change the agent logs level to DEBUG mode by following the below steps:
1. From Application Manager Console, Navigate to the APM tab -> Your APM Applications/Instances -> Monitors Actions -> Edit -> Edit APM Insight Agent Configuration Profile -> Change the Logging Level to DEBUG and Save 
2. Perform some transactions on the application for few mins to analyze the data collection
3. Then, Contact appmanager-support@manageengine.com along with the updated Agent diagnostics for further assistance
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