Hi there, @roxana3.
I'll share information about how app integrations work in QuickBooks Online so you can sync your application accordingly.
Here in the Community, we don't have a direct view and access to any of the third-party applications integrated with QuickBooks. With this, I recommend contacting the Technical Support of Cloudbeds. From there, one of the specialists can help and discuss how the app can be integrated with QuickBooks Online.
After successfully integrating your app, consider logging in to your account using any of our supported browser versions and use this reference for all the features and functions of QuickBooks,: Help Articles in QuickBooks Online. Also, you're able to read subtopics that will describe how a feature is used and how to accomplish tasks related to its functions.
Let me know in the comments if you have any other questions aside from working with applications in QuickBooks. Use the Reply option below to leave a comment and don't forget to include my name, @JonpriL. Take care always and stay safe!