Most likely, your PayPal email address hasn’t been confirmed yet. Even if your email address is on your PayPal account, you can’t receive payments until the email address has been verified.
Please follow the instructions in this PayPal article to confirm your email address. You can also contact PayPal support to make sure your email address is confirmed.
Once you’ve verified that your PayPal email address is confirmed, email publish@pronoun.com and we can try to process your payment again.