You need to modify two files: az-index-admin.php and az-index-cache.php. If you don’t need to index your posts, the most easiest way to make it work with custom post/taxonomy is to change ‘category’ into ‘ your_custom_taxonomy’ ($taxonomy), (there is several occurrences in both files) and to change ‘post’ into ‘your_post_type’ ($object_type), there is several occurrences in az-index-cache.php. And that’s it.
sorry in kinda new ._. what do i have to search and what do i have to change instead of what @.@