In this case, the Splitter may be defective.
There is a method how you can do this:
1. Connect the my-Store.TV stick directly to one of the monitors.
> If the stick starts normally the Splitter has to be replaced.
> If the monitor remains black, the my-Store. TV stick must be replaced.
In both cases, please contact your sales representative.
You can also contact to brodos.net support:
Timings: Monday to Friday (9:00 AM to 6:00 PM)
Number: +49 9133 7770 800