Hi,
Please proceed to
Users-->Offers-->RunMyProcess offers-->User access from IDE and make the payment for the 2 users. Attaching the screenshot for reference.
After receiving the payment confirmation, you may re-activate the overdue users as a Administrator-profile user,
open the user config from IDE and click on edit (pencil) and save (floppy disk).
That should refresh user info and change him to billing ok status.
Let us know for any additional help.
Regards,
Murali