Hello there, @bendcpa. I'll share some steps to help you see the plus (+) sign icon to insert line items in journal entries. 

Thanks for clarifying what @wiseearthway-gma is talking about. To help us determine the cause of the disappearance of the icon, I recommend performing some browser troubleshooting steps. We can start by accessing your QuickBooks Online (QBO) account through an incognito mode. This does not store cache which has the potential to become corrupted and cause unexpected behavior.

Below are the shortcut keys you can use depending on your browser type:

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

Once logged in, create a journal entry and check if you now see the + sign icon. If this works, go back to your regular browser and clear the cache. If the same thing happens, you can use another supported browser or device as it could be that there's a temporary issue between the current one you're using with QBO. 

You can always post again here on the Community if there's anything else you want to know about the journal entry feature. Have a good one, and stay safe.