I can help you make your QuickBooks Online app up and running. This way, you can upload the attachments successfully to your account.
If you're using iOS in uploading the attachments, we currently have an ongoing issue with this. We have already issued a notification on this matter, and our engineers are now working to correct it. With this, I'd recommend contacting our Customer Care Team. They can add your account to the list of affected users. Then, once the issue is resolved, QuickBooks will notify you by email.
Here's how to contact our support:
Go to the Help menu, then click Contact Us.
Type your concern in the box and tap Let's talk.
Choose either Get a call or Start a chat.
Complete the required data and submit the request.
Make sure to contact them within business hours to ensure a swift response.
Alternatively, I'd recommend uploading the attachment using the browser. Let me guide you how:
If you're using android, did you receive any error message while uploading the attachments? If yes, can you provide the exact wording of the error in detail? This way, I can supply you with the most appropriate resolution.