Hello there.
I recently bought an OG Tracker and am loving it.
The previous owner had hardly used it and a couple of the included cables were still in sealed plastic bags.
I removed them from packaging and sadly, the stereo 3.5 to double mono 6.3 sockets adaptor doesn’t work in one channel (tested with various cables and set ups/ instruments etc).
What are my options here, if any?
Thanks in advance.
If the cable is broken and you need the original one, i think you can buy this part in the Polyend online shop under accessoires.
Please be sure that you set your line in channel to stereo in your tracker. Just to make sure its the cable, not the setting 
Thanks for the reply @Patrick
Panic over. It was my fault for not having explored all set-up variations. It works fine. Nothing to see here.
Update:
Actually, the splitter is broken.
I bought a new, longer alternative cable which works out far cheaper from Thomann - huzzah for economy of scale.