This is going to be where we report bugs for the developers.
For example, I was fighting a Lava (Larva super zombie) and it had a 32 super DNA boots, but I lost it, so I initiated a tracking device to find it, but an ad pops up, so I press back to get out of it, and the search was called off! I lost a super zombie tracker AND a chance at a good amount of Super DNA! This isn't the first time this bug happened to me, so either they get rid of the ads that pop up during super zombie attacks, or they give compensation for every occurance that happens!