Why was my DTV application rejected and how can I find out the reason?

Just Got my Rejected DTV notice. 😔 Does anyone ever get a reason and where would that be given? USA citizen applying within China. Had all the forms perfectly as they wanted and meet requirements easily. Submitted with a 9 month cooking class soft power style. Now I have to decide where to go instead as this really screws my life plan. Was going to just work on my music full time. I can't believe some people like myself just get rejected for no apparent reason and others don't. Way too arbitrary and reasonless for $340 wasted dollars, and a lot more with partial cooking class refund, and a plane ticket I won't use. It's so great they make you buy that to apply. Was going to see if I like Thailand enough to do a retirement visa later -but not now. What's the better country to go to?