What happened?!!!?!!!

This app used to be my favourite app and I used it every day
Then I go today and see it is updated what I like: nothing
What I didnt like:
Half of the manga are vanished
Is totally different and I have difficulty using
And I am not even going to mention how much data I have lost and now I need to stay over
I dont even know what chapter I was on or what book I was reading
Seriously what happened?? Now I hate this app and have deleted it
I dont recommend you downloading it at all!!!

HNM2002 about Manga Zone, v4.0