Glad to have you here in the Community, @lgibson.
Let's perform some troubleshooting steps to get this fixed and get you back to working order.
There are times that the browser stores frequently-accessed data, thus causing websites, like QuickBooks Online (QBO), to act weirdly. Let's try logging in to your QBO account using a private browser.
Once logged in, try to logout again to double-check if you're still asked to log in to another account.
If this works, it means that you need to clear the browser's cache so the system can start fresh.
If you get the same result while using a private browser, I recommend switching to a different one.
As always, you can visit our QuickBooks Community help website if you need tips and related articles in the future.
Keep in touch if you need more help with your invoice payments, or if there's anything else I can do for you. Of course, I am always here ready to help you whenever you reach out. Have a great day and take care always.