unfortunately, if Madden fails, even if it says it fails, sometimes you cannot re-purchase without a restart because Play Store continually fails, or errors out, or says you already own this & will not let you purchase again.
Even though you do not receive your purchased item, until you purchase again, you may be getting double billed by Google. I just got a balance notification & upon checking my account & found a dozen purchase within one to 3 minutes of each other for the exact same thing. So, even if it is crashing before you get your purchase (& it never shows up) you may also be getting charged. Check it out & see if you are a victim of this crap too.