On Google's forum for Adsense, someone is saying that changing the pub id without changing the ad slot will result in earnings not going to the right account. The plugin instructions don't suggest this.
They are also suggesting that the instructions given in this plugin are incorrect, that you can't just take your publisher id and substitute it in, because it isn't the same text. For instance, my publisher ID in ADsense is given as starting with "pub", whereas in the code it begins with "ca-pub" or maybe other xx-pub variations for different users, I don't know.
And another problem. In the plugin instructions it says to use %customfield1% and %customfield2%, but in the code it looks only for %custom1% and %custom2%. Why the discrepancy?
Does this plugin work at all?