My Miota vanished

[wowlwow]

Description:

Haven't check my Android wallet since November 2017. I try access it a moment ago, my entire Miota gone. It's a zero iota now along with a blank address. I try to add address, it stated add address fail...

Device info:

App version	0.9.109-32ea8fb
App version code	90109
Android build version	3437181
Android release version	6.0.1
Android SDK version	23
Android build ID	M4B30Z
Device brand	google
Device manufacturer	LGE
Device name	hammerhead
Device model	Nexus 5
Device product name	hammerhead
Device hardware name	hammerhead
ABIs	[armeabi-v7a, armeabi]
ABIs (32bit)	[armeabi-v7a, armeabi]
ABIs (64bit)	[]