Sign Up Buttons Missing

Greetings,

I have read several related Q&As & have not found any advice that resulted in a solution to my problem.

Trying to get the Membership plugin correctly configured. Have all levels & subscriptions active, public, etc. Auth.net & PayPal Express gateways set up. No subscription buttons are visible here: http://untci.org/become-a-member/

Please advise. Thanks.
Dr. W