As of now, I have gotten both the replies from Singtel as well as Glu.
Singtel:
Please note that our Technical department have tested the app “zombies ate my friends” on Sony Acro S (android version 4.1.2) and Samsung S4 (android version 4.2.2) an…
I have submitted a ticket so we should be hearing from glue soon.
And Yea, reinstalling would just wipe your data and save. So I guess all we can do is wait.