Keyboard Issue in RegisterScreen (Again)

[Enoinoo]

When trying to input stuff in RegisterScreen, the keyboard always pops up from the very bottom of the page.

For example, when trying to input first name, the keyboard pushes the whole page upwards, making it impossible to see the first name textfield. It is also impossible to scroll back up.

In addition, if we can have a next button on the keyboard, which goes to the next textfield, instead of the default return, it would greatly improve user experience! (I think TextInput in react-native has some property that makes this possible, not 100% sure)