I can see the significance of using the QBO app, @MN_Mom.

QuickBooks Online (QBO) has a timeout feature that automatically logged you out after the maximum hours allotted to your account. This feature prevents unauthorized persons from accessing your data every time you're away from your device.

To stay signed in, you have to ensure that the app is updated and its data cleared. You can then uninstall and reinstall it again. 

Here's how:

1. Change the Wifi data connection on your device to 4G (varies by device).

2. Close and restart the app.

3. Clear the data:

• Open your device Settings.
• Select Apps (varies by device).
• Choose QuickBooks app from the list, then select Storage.
• Select clear data.

4. Power down and restart your device.

5. Uninstall and reinstall the app.

Once done, I suggest setting your account's time-out preference in the Account and Settings page. I also encourage to save your user ID and password before the allotted time end for you to be not logged out of QuickBooks.

You can follow these steps:

1. On the upper right corner, look for the Gear icon.
2. Select Account and Settings.
3. Choose the Advanced menu.
4. Scroll down to the Other Preferences section.
5. Click the Pencil Icon.
6. In the Sign me out if inactive for drop-down, select 3 hours.
7. Click Save.
8. Hit Done.

Lastly, here's an article that you can browse through on how to solve common errors in QuickBooks Online mobile app: Fix common errors in the QBO mobile app.

Let us know if you still have further queries managing your QBO account via app. We're always here to assist you at any time. Take care!