Set Free Listing to Expire after more than 1 year?

http://cashforgoldbuyers.us

I change the settings to last 50 years, and they seem to be maxed out at 1 year. Is there a way to allow the free listings to last more than a year?

Thank you.

 

Hello,

We are looking to this issue and will reply you as soon as possible.

 

Hello,

WordPress function used in the theme not allowing year more then 24.
Please set expiry time up to 24 year. It will work.