I found the reply I had a little insulting - the product is almost useless to me. I already had a USB-C to HDMI and USB-c to USB 3 to and wanted to use them whilst plugged into my Apple Charger - not possible.
The unit has been relegated to my "old/outdated" bin of useless equipment.
Message to self - DON'T USE THE COMPANY AGAIN
See reply below from Vincent:-
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