Thanks for taking the time to reach out to us here, kathy48.
I want to make sure you're able to print transactions. Let's perform some basic troubleshooting steps to resolve this. I would recommend clearing the browser's cache. If the cache becomes full of data, it can potentially cause unusual responses within QuickBooks Online. Clearing it helps refresh the system and get everything back to running smoothly.
Here's how to clear the cache in your browser:
If you're still unable to print, I'd suggest using this link that provides help with fixing common printing issues: Fix QuickBooks Online printing issues on browsers for Windows.
Please let me know if you need more help by commenting below.