Can you help - managed payroll says connection with qb online has expired; to please set up export again logging into qb online account from setup export preferences?

Welcome to the Community, @karen132. I know that you need help in exporting payroll to QuickBooks Online (QBO). 

We're currently investigating this unexpected behavior to fix it quickly. For now, you'll want to check your Bank of America user profile and update your email address from there. Then, go back to connect with QBO. 

I also recommend contacting our Customer Care team to link your account to INV-43783. You'll then get notified of its progress through email. 

Check out this article for future reference: Setup export of IOP data to QuickBooks Online (QBO). It has a step-by-step guide to connect and export payroll to QBO. 

Feel free to message again if you have additional concerns. We're always delighted to assist.