Does anyone know why i am getting 404 page not found error, when trying to Add receipts

I appreciate you for dropping here in the Community today. @ joemacandrew. I'll help you get back on track with your business so you can proceed to upload your receipts in QuickBooks Online (QBO).

Before we can proceed to address your concern, may I ask if you've tried uploading receipts to a web version of your QBO account? If you haven't, I recommend uploading them using the web version of QuickBooks. If you're unable to proceed, I suggest clearing your app's data to refresh it. To begin, here's how you can clear your app's data:

Mobile App:

1. In your QuickBooks Online Mobile app, select the Gear icon.
2. Choose the Refresh Data menu.
3. Tap Yes.

For Android devices, here are the steps:

1. Go to Settings and then select Apps.
2. Choose QuickBooks Online and then click on Storage.
3. Select Clear Data.

If you have an iOS device, the following are the steps to follow:

1. From the Menu ☰, select Help & Feedback.
2. Choose Refresh Data.
3. Tap Refresh.

In case the issue persists, I suggest contacting our support team. This way, a representative can check and investigate to find out the root cause of this problem.

Additionally, here are some articles to help you in the future:

• Categorise and match online bank transactions in QuickBooks Online,
• Email receipts and bills to QuickBooks Online.

Feel free to get back to me if you need further assistance uploading your receipts in QuickBooks. I'll be more than happy to assist you once again. Keep safe and have a nice day!