Webify Metafields Editor

More than likely this is a good app, but I must agree with some of the others on here that there are no directions for it. My developer walked me quickly thru adding one product. Not for the novice store owner, for sure. Contacted support, but no response. Basically, my store isn't functioning properly because I don't know how to use it. A UTUBE tutorial on how to add, delete and edit would be great.