I'm here to help set up your credit card successfully.
For me to give you the right amount of information, are you trying to set up credit accounts in QuickBooks Online (QBO), or QuickBooks Desktop (QBDT)?
If you're setting up credit card accounts for payment processing in QBO and nothing happens on the screen when attempting to press the button on any drop-down or home screen, you can start by logging in your account using a private browser and clear the cache of your regular browser. This helps determine if the this is a browser and cache related issue.
To access your account using a private browser, you can use either of the following shortcut keys:
Google Chrome, press CTRL+ Shift + N
Mozilla Firefox: press CTRL+ Shift + P
Internet Explorer: press CTRL+ Shift + P
Safari: press Command + Shift + N
If it works fine using a private browser and able to set up the credit card from there, access your account using the original browser and clear the browser's cache. In addition, logging in your account to another supported browser can also help narrow down the cause of this unexpected behavior.
Also, please ensure that the pop-up blocker is disabled.
On the other hand, if you're setting up your credit card in QBDT, you have to repair your QuickBooks. For the detailed steps and instructions, you may check this article: Fix QuickBooks Desktop (Windows).
To learn more about credit card processing, you may check these articles:
Thank you for getting back to us here in the Community about the troubleshooting results. I'm here to make sure you'll get the support you need for this issue.
Since you've already tried the necessary troubleshooting and the problem persists, I recommend reaching out to one of our Support Specialists this time. I want to ensure you'll be able to succeed with using this feature in our QuickBooks Desktop program.
Here's how you can reach them:
Click the Help tab at the top menu bar.
Select QuickBooks Desktop Help.
Click Contact Us.
In case you might need the support link in the feature, you can bookmark this article on your browser: