Hello and Welcome to the Community, accounts-mfxbiot :waving_hand:
If your account is less than 90 days old, you can follow our guide to delete your data and start over in QuickBooks Online.
If your account is older than 90 days, you can't delete the data, instead, you'll need to either manually delete transactions, or cancel the subscription and start again.
Get back to us below if you have any questions on this!
