Happened to me just now, don't want to play since i might do worse overwriting something.. have invested time and money on this and it just screwed me over when a level 99 goes back to level 8.
I have uploaded the save to my account overwriting the last save which was lvl 97. Hope you could bring it to how i had it at 99.
stats clearly show i am level 99 ... 275 + 24. I won't be playing til this get fixed so i wont waste any time and effort again
i also emailed support for my details