Let's perform some troubleshooting steps to ensure you'll be able to use the receipt snap feature and the + button, @Majordave.
Typically, the app stores cache to speed up your experience in performing your tasks. Once overloaded with cache, your system may experience some unusual responses. That's why you're unable to find the feature. You'll want to clear your app data to refresh the system and remove the older files that cause the behavior.
If you're using an Android device, here's how:
- Go to the More icon at the top right corner of the screen.
- Choose Settings.
- Select Refresh Data and choose Yes.
If you're using an iOS device, here's how:
- Go to the Menu icon at the top left corner of the screen.
- Choose Help & Feedback.
- Select Refresh Data and Refresh.
However, if the issue persists, I suggest uninstalling (tap and hold the app icon) and reinstalling the app. This ensures that you're using the most updated version. Furthermore, to learn more about the QuickBooks Online Mobile feature, I've added this article for your reference: Compare Mobile App Feature.
I'm always around if you have any additional questions or concerns. Take care!