Try logging in to your PayPal account before adding items to your cart.

1. Open a tab in your browser and login to your PayPal account with your username and password.
2. Open another tab and go to NEMDAStore Membership Cart
3. Add your purchase to the cart and click on the “Checkout with PayPal” icon

If your credit/debit card is being rejected by PayPal with the message “The card you entered cannot be used for this payment. Please enter a different credit or debit card number.” it might be due to one of the following reasons:

1. Your card is associated with a specific PayPal account, and you’re not logging in with that particular account.
2. Your card was associated with a PayPal account that has since been closed.
3. You’ve linked the card to a PayPal account, but have not yet confirmed it.
4. You’ve exceeded your card limit with the PayPal system.
5. Your email address is raising a red flag in PayPal’s system.
6. Your browser is not accepting cookies. You should clear any existing cookies and try again.

If you are unable to resolve the issues, please check with Paypal Customer Support and they will help you sort it out.