Why does my style of invoice keep changing?? sometimes it gives me the option to change back to old layout and sometimes it doesn't. I had to upgrade to get old layout

Welcome to the Community, @tja249. Let's do some troubleshooting steps to fix this unusual behavior of the program.

Sometimes, your browser settings might interfere with the layout of your invoices. To sort this out, let's start opening an incognito or private browser window. You can use the following keyboard shortcuts for the most popular browsers: 

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

Once you have opened the browser window, log in to your QuickBooks account and see if the switch to the old layout button is available. If it is, proceed to clear your browser's cache. This process removes and fixes specific issues and helps the program run flawlessly. Additionally, you can use other devices and supported browsers to ensure everything works as expected.

Moreover, if the option to return to the old layout isn't available. I suggest contacting our customer support team to check your account safely and investigate the reason for this behavior. To avoid inconvenience, please be mindful of their support hours.

After accessing your invoices, you can check this article on how to personalize your sales forms: Customize invoices, estimates, and sales receipts in QuickBooks Online.

Return to this thread if you have more questions about your invoice layout. The Community is always here 24/7 to provide assistance. Take care, and have a good day.