Thanks for sharing your concern in the QuickBooks Community page, @LaCora416.

Yes, you're correct. QuickBooks Online Plus subscription offers the option to customize your sales forms in the program.

Can you share with me the country or region you're using in QuickBooks? This way, I can run some tests in our sample accounts to verify the issue and fix it. You can also share if you see any error messages when customising your forms. Any further info would be much appreciated. 

In the meantime, I'd recommend running some basic troubleshooting to immediately fix the issue. 

To start, open your account in a private window. This doesn't save your local web history and would help us isolate the problem. Here's how:

• Press Ctrl + Shift + N (Google Chrome).
• Ctrl + Shift + P (Firefox).
• Control + Option + P (Safari).

Once done, try creating a new template and see if it fixes the problem. 

If yes, go back to your regular browser and clear its cache. Alternatively, use another supported browser if you're still getting the same result. This might be a temporary issue with your current and QuickBooks. 

You can also add logos to your sales forms too. A well-designed and properly presented logo helps establish the company's brand and personality.

Please let me know if the following steps above work for you, @LaCora416. I want to ensure you're able to get back to your business. Have a good one.