Why does it close some popups that I want?
POP-Stopper-IE is just trying to be safe rather than sorry. If it stops a popup that you did not want it to then just click on the Add URL button on the POP-Stopper-IE toolbar to add the popup to the Allow list, or click on the Add Site button to add the entire we site to the Allow list. If you would just like to see that one popup then just click on the long button containing the URL of the popup.