Invoices flickering when trying to add to invoice. Won’t enable me to save either.

Hello there, seanhribal.

The issue you are experiencing with invoices flickering when trying to add to them and not enabling you to save could be related to a common problem faced by users across various accounting software platforms. 

This issue is often associated with the page jumping or not saving properly while entering data on invoices. To address this problem,

let's perform troubleshooting steps to resolve the issue and allow you to work on your customer's invoice without any further problems.

To troubleshoot your issue, let's log in to your QuickBooks Online account using a private browser session. This will help us isolate the problem.

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

If this works, you can clear your regular browser's cache so the system can start fresh. But if you get the same results while using a private browser, use a supported browser instead.

I've also included this link, Invoices and Payments for QuickBooks Online, which is a collection of articles you can utilize while working with us.

Tell me in the comments sections below if there's anything further I can do to assist you. I'll be available to help.