Good day, avieira.

Thanks for dropping by the Community space. I want to make sure you’re able to enter credit card information to a customer in QuickBooks Online.

I replicated this on my QuickBooks sample file and I was able to enter the preferred payment method and credit card information under my customer’s Payment and billing tab.

Once I clicked Credit card on the Preferred payment method drop down, the Enter credit card details option comes up. You may need to try using a private window or switch to a different browser to verify if this has something to do with the browser you’re using when logging into QBO.

Here’s how:
•    Press Ctrl + Shift + N keys on your keyboard (Google Chrome)
•    Press Ctrl + Shift + P keys on your keyboard (Firefox or Internet Explorer)
•    Press Control + Option + P keys on your keyboard (Safari)

If the private browsing session works, you’ll need to clear your browser’s cache to prevent unexpected behavior in the product. Make sure to remember your saved information, such as login IDs and passwords. Check out this article for the steps: https://community.intuit.com/articles/1436727.

After performing the recommended solution above, you’ll be able to enter credit card information without any issue. However, if the same problem persists, I’d recommend calling our Customer Care Team for further assistance. They have a screen-sharing tool that helps them see what’s going on in your QuickBooks to help resolve the issue.

Here’s how you can reach them:  https://community.intuit.com/articles/1145770.

Please let me know if you have any other concerns. I’ll be here to help. Wishing you the best!