May I know what version you were using?
EZ PayPal is incompatible with certain security plugins. If an incompatibility is detected, the admin page (Settings -> EZ PayPal) will give you details and possible steps. Under no circumstances (that I could create on my test machines) does it give a blank admin page. Unless you are using an old version. Hence the question.
I just committed a change aimed at resolving this invisible admin page problem. Turns out that some mod_security setting (preventing hidden iFrames) may have blocked the admin page because it had overflow:hidden style.
Could you try V6.40 please? If the issue is resolved, and you like the plugin, would you consider giving it more positive rating? Thanks.
