[Zubersoft]

The problem is that your purchase through Google Play is tied to the email address you used to make that purchase. Google does not allow purchases to be transferred between accounts. Your Google account should still be separate from the cable service provider though, meaning you should still be able to log into Google Play with that email address (you just won't actually receive any emails). So you should still have access to your account and you should be able to download and install MobileSheets.

Mike