In-Game Name: PeculiarJoeDevice and Model: iPhone 7+Device Operating System: iOS 12.1.4Cellular or WiFi: WIFI predominantlyGame Version Installed: 21.3Game Mode: Champion levelingDescription of the Issue: I was in the process of leveling my 5* Angela to 4/5, was on 50/55 and I had just selected enough ISO to go to 55/55. On button clicked, I saw the necessary gold reserves being allocated for the level purchase, and the game went into connection limbo. I thought it might respond, but the game kicked me out, so I decided to cold reset the game, and launch it again.
When I returned to the leveling screen, the 55/55 had not taken effect, rather, it was reverted to 50/55 but the gold that I had spent at that point, was not reversed.
See the following screenshots. Luckily, I decided to take a snap before:

When I hit the button for the level. Went into limbo at that point.

After I logged into the game after the cold reset, you can see the gold allocation has not been reversed, yet the ISO spend had. Bloody annoying.