Will you be able to delete all my details from this app please?

Hi there, @elcc.  

Welcome to the Community. I can see the importance of deleting all your information in QuickBooks. You have the option to remove your company details if you've created your account within the last 60 days. 

This procedure will entirely wipe out your books but won't cancel your QuickBooks subscription. I'd suggest you import all the important list for your future use before doing this. Once done, follow these steps below:  

1. Log in to your QuickBooks.
2. Go to your homepage. 
3. Replace the end of URL from homepage to purgecompany. See example below: 

• From: https://qbo.intuit.com/c28/app/homepage 
• To: https://qbo.intuit.com/c28/app/purgecompany

   4. A pop-up screen will show a summary of the items to be deleted.

   5. Enter the word “YES” to delete the data. 

   6. Click OK to complete the process.

   7. Click Wipe Data. 

Once finished, you'll then be rerouted back to your homepage. You can proceed to cancel your subscription to prevent charges.   

I've also include link with a steps to cancel your subscription through an app store if you subscribed through mobile apps: Cancel a QuickBooks Online subscription purchased through an app store.  

Let me know how the procedure go through. I'm here to extend my help in any questions you have. Have a great day!