Oh well as I said ,the game is full of bugs.
Always the "insufficient units "props up ,I made 3 accounts just to test the champs .
1. I did up the talents of chmps results in a semi-black screen wenn u want to atack/take them out,that means my 1st acc got bugged.
2. I tried to upgrade the skills of champs and as a result now it wasn't a black screen its just closed the app.
3. Trying to wear armors also is bugging the marches so again the game will bug .