You are asking a community of other users. This is NOT something we can help you with. Contact support.

https://accountants.intuit.com/support/en-us/help-article/intuit-account-settings/contact-proconnect...

CALL THEM. CRY. MOAN. SCREAM. Get a refund for the 2nd user and have them train you how to do it without throwing money at them.