I put the smart buttons phone number does not appear in PayPal, how do I fix this?

[smoother121]

I put the smart buttons on my site but when I get the customer details through which the customer's phone number does not appear in PayPal, how do I fix this?

[PayPal_JonK]

Hello @smoother121, 

Welcome to the PayPal Community! I'm sorry to hear your smart buttons aren't capturing your customer's phone numbers. I found an interactive demo on smart buttons you may find useful in this Help Center article: What are Smart Payment Buttons in PayPal Checkout? You can find some more resources at developer.paypal.com. 

I hope that helps!

 - Jon K