I did several times panzer dragon normal difficulty.
Today I tried twice the difficult one.
The first time I got to round 9, but app crashed.
"not a big deal" was my thought, since I was thinking that I would have started from there.
Nope. I got back to home screen, 4 normal chests, 1 yellow and 25 energies gone (plus exp).
The second time the app crashed on the second-thirds spin, for a total of 50 energies wasted, 5 normal chests and 1 yellow.
I could easy beat panzer dragon because I had an healer + achilles combo, and the heal output would have covered the damage, it would have just been a matter of time.
Any chances to artificially send me back to that 9th stage? Or any refund? It does suck :/