How do I change my LOG in ID?

Hi there, @debbie137. I'm glad to assist you with how to change your log in ID.
 

We can change your log in ID in two ways: within QuickBooks Online (QBO) or we can go to accounts.intuit.com and log in using your QBO login. Then, click on Sign in & Security and select User ID to change.
 

To change log in ID within QuickBooks Online:

1. Sign in to QuickBooks Online.
2. Go to the Profile icon beside the Gear icon.
3. Click on Manage you intuit account and select Sign in & security. 
4. Select the User ID and make changes.
5. Then, select Save and done.
    

Just in case you want to change some information in your QuickBooks Online, you can refer to the links below:
 

• Change your business info in QuickBooks Online.
• Add and manage user in QuickBooks Online.
  
  

Let me know if you want to know more about how to manage and add customers to your QuickBooks Online. I'm just a post away. Take care!