If the publisher can't see the offers in their publisher interface dashboard, this could have two reasons:
1) Offer is set private or exclusive
The offer might be set as a private or exclusive, so the publisher is not able to see it.
Click here to learn how to learn more about Offer types and how they affect the appereance in the publisher portal.
2) Offer might already been running (inside Campaigns)
The publisher might arleady been running the offer, which moves the offer from the "Offer Wall" to his "Campaigns" tab.
Click here to learn more about the "Campaigns" in the publisher portal.
Click here to learn how to publish offers