This guide provides a collection of helpful hints and solutions for troubleshooting in loadIT if it's not working as you intend.
In general, before starting large scale distributed test executions, first execute the test plan locally with only one virtual user and reduced runtime and analyze the results in the view results tree listener.
For help about JMeter core components, you can also refer to the official JMeter documentation:
Some JMeter core components that are not needed in our case were hidden from the menu. They can be displayed by removing them from the not_in_menu property of the properties file. Some JMeter components were changed in their behavior, but these are explained in this documentation.