intermittent success while logging using loggly

I am using message logging policy in Edge cloud to log messages into my free loggly account.

I see not all the test messages are appearing in loggly.

  1. All ERROR level messages → appears everytime during testing.

  2. CRITICAL and NOTICE → never appears in loggly.

  3. WARN and WARNING → appears as WARNING for intermittent transactions.

  4. ALERT appears correctly.

I placed appropriate filter in loggly to verify different logs. I tried without and with SSL with TCP option only.

6514 TCP true true

Any guess what might be causing this issue ?