When trying to delete a transaction, I'm asked to enter the password to continue but my QB password doesn't work. Any suggestions?

Make sure to login as Primary Admin or Company Admin

https://quickbooks.intuit.com/learn-support/en-us/help-article/customer-company-settings/edit-closed-books/L76xHuaZ5_US_en_US?uid=lt2hu7qc

It's great to have you join the Community, @mvklopp. I'll walk you through the process of effectively deleting a transaction without needing to input a password. It's important to set a closing date and password to prevent accidental changes to financial reports.

Here's how you can turn off or edit your close books in QuickBooks Online (QBO):

1. Before you start, sign in to QuickBooks Online as a primary admin or company admin. Only admins can make these changes.
2. Go to Settings ⚙, then select Account and Settings.
3. Select the Advanced tab.
4. Select Edit ✎ in the Accounting section.
5. Change the Closing date. Note: To change your password, just enter a new password and confirm it.
6. Select Save, then Done.

For future help you can click this article how to Void or delete transaction in QuickBooks Online.

Drop a comment below if you still need my help. I'm always here for you. Take care and have a lovely day ahead.