Similar thing just happened to me after beating 5-1, right away all three champions have negative points available. I don't think any of them gained more than one level.
Hi Short, There were some issues with experience but they have been fixed. Exp gained is now shown properly and you shouldnt have lost any. sorry for the inconvenience!
Anyone know if I can delete my progress and start over (without making a second Kong account)? I'd love to try again now I know how the game works, and have a shot at not losing valuable units ... or wasting health potions on a Smasher b/c I thought he was unique.
 "Dungeon Team"){kind=icon}
 "Digitwars"){kind=icon}
 "Stwalt"){kind=icon}
 "Viking Raiders"){kind=icon}
Hi Short, There were some issues with experience but they have been fixed. Exp gained is now shown properly and you shouldnt have lost any. sorry for the inconvenience!