It looks like you have a ZendGuard version of the add-on isntalled. Please donwload the latest version of Abandoned Cart from here. Enter your license key in the Updates tab and download the zip file.The current version is 0.1 and I'm getting a message in all my sites that "Abandoned Cart" has an available update to 0.2 ... but when you click "Update now" ... it does not update. When you refresh the page the update message is back again as in the pic below. Also ... on the download page for the plugin, it says the latest version is 0.1.
Why am I getting this update message for a non existent version 0.2?
View attachment 2951