I am trying to post a payment on an invoice and nothing is happening

Let's troubleshoot the browser so you can post the payment successfully,

@fred25.

To get started, make sure to access your account in a new incognito/private browser. This way, we can see if this issue is related to your current browser or not.

Here's how:

• Google Chrome: Ctrl + Shift + N
• Microsoft Edge: Ctrl + Shift + P
• Mozilla Firefox: Ctrl + Shift + P
• Safari: Command + Option + P

Once completed, you can log back into your account and post the payment on an invoice.

If this fixes the issue, you can clear your browser's cache to optimize it. Also, it'll load new cache data without facing the same dilemma later.

Besides, you can use another supported browser that I mentioned above.

I'll add this article as your reference on how to post invoice payments QBO: Record invoice payments in QuickBooks Online. It includes how to record partial payments and joint payments.

Feel free to add a comment below if you need further assistance. I'll get back to you as fast as I can. Have a great day!