Please be informed that Java version to be supported is Open JDK 11(java11), and Java 9 and Java 10 is not supported for TradeGuard in J-GATE3.0.
Since we have not confirmed the behavior of non-supported versions and therefore, it may be possible to see an unexpected behavior including startup of TradeGuard.
However, we will investigate at our best effort bases for the cases of troubles as the result of connection to J-GATE by using non-supported versions.