Good morning, Writetowinwin.
Thanks for joining me here in the Community. I appreciate you letting me know which troubleshooting steps you've tried, and I'd be happy to point you in the right direction for assistance.
In this case, I recommend reaching out to the support team for help with this issue. They'll be able to verify your account details in a secure setting, as well as view your screen to see what may be preventing you from seeing your client's files. They also have the tools to escalate the issue if they feel it's necessary. You can reach them by following one of these methods:
Schedule a Callback or start a Chat: click (?)Help in the upper right > type and enter "Contact support" into the QB Assistant > click Contact Us > explain your situation > click Let's Talk > choose Get a callback or Start a Chat.
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If you have any other questions, feel free to reach out here.