Hello @susanr222,
Welcome to the PayPal Community Forum! I'm sorry to hear you've run into some issues receiving a payment through PayPal. Normally, you would need to have a confirmed email address and verify your account to receive payments from Facebook Marketplace. I found the following article from Facebook on Receiving payments through Facebook Marketplace.
If you've already Verified your PayPal account and Confirmed your email address, please reach out to Facebook Support for assistance with that payment.
Best wishes on this and future transactions!
- Jon K
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