Paypal React- Customers cant pay through Credit-Debit card

[AnchitOswal]

I have integrated Paypal on my React web App. Customers are taken to Paypal popup for the payments. If customers do the payment via Paypal account it works but when customers try to do payments through Credit-Debit Card option (present on Paypal Popup at the bottom - see image attached)  below errors are faced - 

1. Sometimes they see Blank Screen after entering card details or after entering OTP

2. Sometimes after entering card details users are redirected back to same popup where they have to choose paypal account or Credit-Debit card. 

I am wondering if  credit card feature is stable enough ?

Image -