Hi there, @Mark_Schwanbeck.

Thank you for posting in the Community. Allow me to help share some possible solutions to see all your clients. 

There are a number of reasons why you might not find your client in the QuickBooks Online Accountant Client list.

• The incorrect login is used
• You were not invited as the Accountant
• Firm access to the client was removed
• The client was moved to the inactive list
• The client was renamed in the QuickBooks Online Accountant Client List

To start, let's verify if the client is moved to the inactive list.

Here's how: 

1. On the left pane, select Clients.
2. Above the ACTIONS column, click the small Gear icon.
3. Put a check in the Include inactive clients box.

If you don't still see the client, please refer to this article for more troubleshooting steps: How to find a company that is missing from the QuickBooks Online Accountant client list.

For additional help, feel free to reach out to our Customer Care support assist you further.

Here's how: 

1. Go to https://help.quickbooks.intuit.com/en_US/contact.
2. At the top right, select your QuickBooks version.
3. Select a topic.
4. Click on the Get Phone Number or Start a Message button.

These resources should help to get you back on track.

I'm just a few clicks away if you have any other questions about your finding the missing client's on the list. I'll be delighted to be your guide once again. Have a great day.