Hello there, @Picea.

Let me help and guide you on how to remove yourself as an accountant in QuickBooks Online (QBO). 

To begin, you must first log in or switch company in order to remove yourself as the accountant. To switch company, here's how:

1. Go to the Gear Icon.
2. Under YOUR COMPANY, select Switch company.

After switching to your QBO company, you can now remove yourself as accountant.

Here's how:

1. Log in to https://qbo.intuit.com as the Master Admin (not the accountant's user access).
2. Click on the Gear icon.
3. Choose Manage Users.
4. In the Accounting Firm tab, click on the Delete in the Action column.
5. When prompted to continue deleting the access, click on Yes.

For future reference, you can check these articles to guide you about managing users:

• User Roles and Access Rights in QuickBooks Online 
• What To Do If Invited Users Did Not Receive Your Email Invitation in QuickBooks Online 

Please feel free to leave a comment below if you have further questions about removing yourself as an accountant or other QBO-related concerns. I'll be here to assist you.