I'd think this is about an app play store listing with ratings and user numbers etc.
I still have the code and I can create an APK, but the prospects of the application are very sad.
Back up what? Google Play?
I'm sure his code is backed up, he's talking about the Google Play platform. He is locked out and hoping that his plea might reach someone at google and they'll reach out to him. So upvote the story and maybe that will increase the statistical chance that someone at google might fix it.
From the article it sounds like the main issue is that they lost years worth of building their brand/community/user-base and aren't sure they'll ever be able to publish to the play store under their name again.
it's more like a marketing part rather than a source code itself. my bad.