I am using this but there is too many disadvantages.
1-Very low quality documentation.
2-Completely torture to add subcategories with thumbnails.
3-Some very important features should be added. For example , there must be a "Empty Space" under the "Drag and drop to create custom tab view".
4-You can not assign your categories,images to center of the wrapper under the "Drag and drop to create custom tab view"