I'm here to help you remove an old accountant so you'll be able to gain access to your subscription, Waterwitch.
The error message indicates that the accountant is still the current master Admin or the subscription was created using his login. You can reach out to your accountant so he can remove you from the wholesale billing. This way, you will get full access to your account once you've updated your billing info.
Fill me in if you have any other questions about accessing your QuickBooks Online subscription. I'll be one post away if you need further assistance.