According to KB jvm-inspector allows to inspect Java Applets elements so AutoIt driver can use this selectors to find elements.
In case you are unable to setup RPA Package Java as default Java for IE (jdk/jre.exe installer can do that anyway), you’ll need to load Java with build version which is not higher than RPA Package one.
Having RPA Package Java version 8u92 and IE pointed to 8u101, JVM-Inspector was unable to connect to 8u101 JVM and display elements selectors.
Even when selector was found through different Machine, RPA Agent was unable to find it.
Installing 8u91 and pointing to IE fixed that issue. JVM-Inspector started working and Selectors were executed succesfully.