For instructions on how to enable verbose logs via the output console / logcat, see the following platform-specific pages:
To verify you enabled verbose logs successfully you can check for this line — Verbose Logging On: true — in the AppLovin SDK initialization block:
======================================== AppLovin SDK Version: 9.13.4 ⋮ Verbose Logging On: true ⋮ ========================================
You can then find AppLovin verbose logs in logcat or XCode terminal as lines that start with /AppLovinSdk: [AppLovinSdk].