Error: A required agreement is missing or has expired

You need to log in toApp Store Connectand accept the agreements there that are awaiting acceptance on your side.

1. Select Business at the top of the page.
2. On the Agreements tab, find the Paid Apps row and click "View and Agree to Terms".
3. In the dialog that opens, read and accept the terms, then click the "Submit" button.

After these steps are done, write to support and let us know about it.