Hello! I just finished the installation/setup/customization of Guru for a client, and so far everything seems to be working well, but today he just made his first sale and the payment didn't show up in his Paypal account. I checked the settings I have, and everything seems to be accurate (I blurred out his email address in the photo, but it is his correct Paypal email address). Any ideas what might be wrong? Thank you so much for your support!