I downloaded the mining program, but it doesn't do anything. There's no instructions and it just flashes up a command window that disappears just as quick!
I also tried messaging the "Contact Us" on the website, but seems it either doesn't work, or I'm just being ignored

I own a lot of XCN, I'd like to mine too, but everything feels like pulling teeth at the moment!
Please use this thread or slack for support.
If you make a bat file with "pause" command at the end, you can see the error message which is printed before the window closes.