OK well now my crowns are over 26,000. I know it said there would be some compensation but that is so many more than I had (1,200 or so) it must be another error. Posting this may seem dumb, but if I didn't report it I'd feel like I was ripping off people who spent real money for them.
Player...
After the latest maintenance I still have negative crowns, before all this started I had about 1200, then I had -1400 or so, now I have -13.
Player ID 731724
thats totally normal, usually the instant upgrade only applies to the time, it still costs you resources. but if you don't have enough of a resource for an upgrade it will empty that resource and then use extra crowns to make up the difference.