Hi I’m the creator of Big Mail. As the subscription is sold and managed by Apple we’re bound by the App Store terms and conditions (things like refunds, liability, etc)
This is correct! Though there is a newer driver board which supports USB-C (and thus one cable), but it's a lot more expensive. And since I was connecting to an 2015 iMac, wasn't needed in my case.
The supplier was great! I think I received it within a week of ordering (which considering I'm in the UK and it was coming from mainland China is pretty impressive). Here's a link to the exact part and supplier I used: https://www.aliexpress.com/item/4001192011831.html?spm=a2g0s...
Heya, I’m the guy who put this together. Let me know if you have any questions about it! I’ve had the setup for about a month now and absolutely love it.