I can't mark a payment as "received". The program just spins and spins. Is anyone else having this issue?

I'll make sure you'll mark your payment as received, @mpellini-icounse.

Let's rule out a possible browser cache issue. There are times the browser is full of frequently accessed data. This helps in swiftly loading web pages faster the next time you visit a site. However, too much of it causes issues that can hinder the performance of your account.

To verify this, let's access your QuickBooks Online (QBO) account in a private or incognito window. This is a great way of identifying the issue as this doesn't save any data files. 

To open a private window, you can refer to these keyboard shortcuts: 

• Press keys: Ctrl + Shift + N (Google Chrome browser)
• Press keys: Ctrl + Shift + P (Mozilla Firefox & Microsoft Edge browsers)
• Press keys: Command + Shift + N (Safari browser)

If you’re able to record your invoice payments, I’d suggest clearing your regular browser's cache to refresh the system. If the issue persists, I suggest using other supported browsers. This way, we can check if this is a browser-specific issue.

You might also want to check out this link that can guide you on how to deposit your customers' payments: Record and make bank deposits in QuickBooks Online.

If you have any additional concerns or questions recording invoice payments, you can always tag me in your response. I'll be here ready to answer them for you. Have a good one!