Thanks for reaching out to us, Carol Machado.

Currently, QuickBooks will auto-populate the vendor's name instead, when printing a check that doesn't have a vendor address. You'll want to check out this link for more information about recording and printing checks: How To Record and Print Checks.

For future reference, I have these help articles that will give you more information about expenses, pay bills, and write checks in QuickBooks Online (QBO): Expenses And Vendors in QBO.

Fill me in if there's any help you need. I'll always be around to assist you.