Great question @switzig!
Yes, you can access multiple QBO accounts once you are invited.
The error you're seeing is an open investigation and our team is working on a solution. We appreciate your patience in this issue and hope to have this working for you all as soon as possible.
As a temporary workaround, please access the file with a different user ID.
If you would like to be alerted when this investigation has been resolved, contact our Support Team and let and let the agent know that they are impacted by INV-51960.
To reach out to QuickBooks Online Support:
- Sign in to your QuickBooks Online company.
- Select Help (?) at the top right.
- Enter your concern, then select Let's talk.
- Select Contact Us to connect with a live support agent.
- Choose a way to connect with us:
- Start a chat with a support expert.
- Get a callback from the next available expert.
Let me know if I can answer any other questions you may have! Take care.