Hi, I would like to cancel and remove all Data from this app
I'll help you with removing your data, Paulo1.
If you're a new customer, you can easily start over. You can reset your account that has not been active for more than 90 days by purging it. This process will delete all data in the company file. You can no longer restore it once it's deleted.
You can purge the file when you open QuickBooks Online through the browser. Here's how: