New Coupons don't show up or delete

Hi,

When I try to add new coupons into the Marketpress plugin, they don't show up -- despite the plugin responding that the coupon had been saved and/or deleted.

The coupons also don't show up in the list of coupons, it just remains "locked" at the screenshot.

Please help. Thanks in advance!

Phil
urbanoasisnashville.com