Crashes.. need lot of improvement

I now cant even log on my account. It keep crashing .
I have deleted and reinstalled it several times . I once could not pocket my profit because i could not logon and ended up with a loss. And if you are able to login, the account info is wrong.
Beside you have to manually type the pair name every time you change the screen .. It could be a nice app but need lots of improvement..

Yasser k about MBT Mobile