I have the same problem. Camera supplied is GC0328, but advertised (also by Seeed, still at this moment) is OV0328.
Under Arduino, these are not interchangeable. I found the library to get the selfie demo working, but the AI demo (mobilenet) is not working. Sipeed support is not answering. As I purchased this kit from Seeed, not from Sipeed, I expect Seeed to step in. Either provide instructions to get this working, ship the correct camera, or have Sipeed to provide proper support. Last option is of course to return the kit and refund, but I am not aiming at that at all.
Best regards,
Rumoldus