My third part app integration suddenly stopped working 2 weeks ago. I disconnect then tried to re connect. I now can’t find the app.?

I've got you covered on how to find the third-party app and install it back in QuickBooks Online (QBO), karen216.

We can go to the Manage App Subscriptions tab to find the Intuit app or a third-party app and install it back to your Online account. Here's how: 

1. Go to the app centre.
2. Select My Account, next to Help.
3. Choose the Manage App Subscriptions tab.
4. Find the application you wish to install.

We can also find it directly in your QBO account by following the steps below: 

1. From the left menu, select Apps.
2. Go to the Find apps tab.
3. Enter the app name in the search bar or select the Browse category drop-down menu to check out different apps.

Check our QuickBooks App Store and look for an app that integrates with QBO. You can also go to the Apps menu in your QBO account and look for an app from there. If the same thing happens, you'll need to have either Primary Admin or Company Admin access to add a third-party application in QBO. If you already have this access and still getting the same error, you'll want to perform some troubleshooting steps. Let's start by using an incognito window and install an app from there:

• Google Chrome: Ctrl + Shift + N
• Safari 11 or newer: ⌘ + Shift + N
• Mozilla Firefox: Ctrl + Shift + P
• Microsoft Edge: Ctrl + Shift + P

Also, browsers save junk files called cache that can cause errors in QuickBooks Online, so you'll want to clear them. Additionally, make sure that you're using an up-to-date browser.

Feel free to visit our Help articles page to learn some tips and tricks for managing your QBO account. From there, you can read great articles that can guide you through the steps-by-steps process.

We'd be happy to hear any updates after performing the steps as we want to ensure this is resolved for you. Also, if you have questions about running vendor reports, please add a reply below. I'd be happy to assist you further.