since Twitter login is unavailable.
Just copy jp.co.studioz.shamanking which in Android > Data or rename it by adding 1 behind it.
Then delete the app, install the original one or modded one.
Before opening the app, rename or put the jp.co.studioz.shamanking back to normal and you have your account back.
By the way, for modded app, there are few problems...
Drops become stamina
Any news or gacha drop list are blank in my place
I hope it would be fixed...