All my invoices and clients keep disappearing. Last time this happened I reinstalled the app but some invoices never reappear, the clients did, show as open invoices.

Thanks for mentioning that you have tried to remove and reinstalled the app before, emmamcgillmakeup. 

Let us also try to refresh your data and check if the invoices would show up again. Here's how:

If you're using an iOS device

1. Go to Menu ☰ and tap Help & Feedback.
2. Tap Refresh Data.
   Note: A message appears “Caution. If there was a problem getting your latest QuickBooks Online data, you can refresh it now. It may take a few minutes.”
3. Select Refresh to confirm.

If you're on an Android device

1. Go to Menu ☰ and tap More Options ⋮.
2. Select Settings, then Refresh Data.
3. Tap YES to confirm.

Once done, check if the data are now showing up. 

Just in case the issue persists, we'd want to take a closer look at this to determine why it's happening again. 

To do that, please reach out to our chat or phone support team for QuickBooks Online. They will be asking for additional details to sort this out. Here's how: 

1. Sign in to your QuickBooks Online company.
2. Select Help (?).
3. In QB Assistant, enter the topic you need help with. You can also enter questions.
4. Select Contact Us to connect with a live support agent.
5. Choose a way to connect with us:
   • Start a chat with a support expert. Live chat M-F, 8:00 AM to 10:00 PM and S-S, 8:00 AM to 8:00 PM, AEDT.
   • Call us. M-F, 8:30 AM to 6:30 PM, AEDT.

Feel free to go to this article as well to see the list of all available features in the app: Compare Mobile App Features.

Let us always know if you have follow-up questions. We'll make sure that you get the help that you need.