I'm not a Xenforo newbie, but no expert either, but for the first time I absolutely cannot figure out how to configure this add on. I have successfully (I think) followed the steps to configure the PayPal API Credentials retrieval, but for the life of me cannot get anything going with the rest of the addon. The lack of a configuration how-to doesn't help and is quite surprising to be honest. So here is my Admin CP set up. What am I doing wrong?! Thanks in advance.