I am having issue

HI,

I am having issue with Casheble on a site listed below. I would like to know if you have any suggestions. I have attached image of the cashable plug in that will not let me change the number of days.

The following cacheable resources have a short freshness lifetime. Specify an expiration at least one week in the future for the following resources:
http://www.discountrxprograms.com/cdn-cgi/styles/cf.errors.css
http://www.discountrxprograms.com/cdn-cgi/scripts/cf.common.js
http://www.discountrxprograms.com/cdn-cgi/scripts/zepto.min.js
MORE AT GOOGLE DEVELOPERS