What version of Zen Cart are you using?

Has your site been upgraded? When? From what version(s)?

What addons have you installed? When?

In what ways is your site customized or different from a brand new uncustomized install?

WHEN did the problem "start"? How does that compare with other events of your hosting company, changes you've made to your site files/addons, or your admin settings, etc?

If this is your first store, have you tested all aspects of transactions before going live?


How are you setting the dates to beyond 2018?

Can you create a coupon with the default dates?