Thank you for performing the troubleshooting procedures, tp1026.
Since the troubleshooting steps above didn't work on your end, I recommend contacting our QuickBooks Online Support Team. They have more tools, like screen-sharing, to help you troubleshoot the issue further.
Here's how:
- On your QBO account, click on Help (?).
- Select the Search tab, then click on Contact Us.
- Enter the concern, then select Continue.
- Choose either Start a chat or Get a Callback.
Moreover, please see this article for more details on the various file types that you can attach to any transaction in QuickBooks, as well as factors to keep in mind while emailing them: Attachments in QuickBooks Online.
Additionally, you can also look through the supported characters for your lists, check out this article: Acceptable characters in QuickBooks Online.
Don't hesitate to leave a comment below if you have other QuickBooks concerns or additional questions about PDF attachment. I'd be delighted to assist further. Have a good one.
