You can have this client add you as an accountant user to their company file, cpa-jamessawyers.
When your client sends the invitation, log out all of the Intuit websites in your browser. This can sometimes cause the invite to be redirected to a wrong user ID. Then, check your email and accept the invitation with the title [User] has invited you to use QuickBooks Online [Version].
Once you open the email, follow these steps:
Lastly, log in to your QBO account again to see your client Terri's Tech in your client list. You can then access their company file as an accountant.
Please feel free to ask questions by leaving a reply to this thread. I'll be here to help you some more.