Why does this product continually suck? When marking an invoice as paid, it doesn't work. When on the app, you can't easily save an invoice nor print the invoice. Wow.

I want to ensure you're able to mark invoice as paid in QuickBooks Self-Employed (QBSE), dtiensvold. 

May I know what specific error message you've encountered when paying invoices in QBSE? I appreciate any extra information you can give, and it will help us isolate the issue and provide the best solution.

In the meantime, we can perform some troubleshooting steps to fix this. There are times when the browser is full of frequently accessed page resources, which causes some errors or unusual responses. 

Let's start accessing your account using a different or private browser. You can use any of these shortcut keys:

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

Moreover, I've included the following articles to help you manage transactions within your program:

• Create invoices in QuickBooks Self-Employed
• Record or attach expense receipts in QuickBooks Self-Employed
• Add older transactions to QuickBooks Self-Employed

Fill me in if you have additional questions about paying invoices in QBSE. I'm always here to help. Take care always.