Can't update an app.

I'm doing all instructions from FAQ. But it tells me "Your application already exists on our site here. If you believe this is a mistake, please contact us."
what I should do or where did I go wrong?

RE: Can't update an app.

You cannot update your pre-existing application on SlideME by submitting it as a brand new one. That would be a duplicate application (and considered spam since applications cannot be deleted or removed). You have to click "Edit" at the top of the application node you already have on SlideME, then upload your new apk, then click Save. Your updated application must have the exact same package name.