The option to Automatically apply credits is not available in the automation setting ?

Hello, mc47. 

Thank you for reaching us in the Community. Let's see if this is a browser issue or not, let's try refreshing your browser by clicking the Reload icon or pressing F5 on your keyboard. If the same things happen, we can continue following the recommended troubleshooting steps above.

Let's use an incognito/private browsing session by following shortcut keys below:
 

• Microsoft Edge: Hold Ctrl + Shift + P
• Mozilla Firefox: Hold Ctrl + Shift + P
• Google Chrome: Hold Ctrl + Shift + N
• Safari for Mac: Hold Command + Shift + N

Log back in and check if you can view the Automatically apply credits option in the setting. If you've done activating this feature, let's try to check if it works. 

If you can no longer see it, proceed to delete your browser's history. We can follow the steps in this article on how to do it: Delete or disable cache and temporary internet files in your web browser. 

Alternatively, we can use a supported, up-to-date browser and log back into your account. It'll help us check if the issue is caused by a browser. 

You are always welcome to reach back out to me if there's anything else you need concerning QuickBooks. I'm always here to lend a helping hand. Wishing you and your business continued success.