vinjar on "[Plugin: Store Locator Plus] Not button to add category in Tagalong addon"

I just bought the Tagalong addon to Store Locator Plus, but cannot find any button to add a new category. I have tried to press enter in the fields without luck.

Using Wordpress 3.5 and latest version of Store Locator Plus.

Any suggestions to how I can fix this issue? I have tried to have a look directly in the database but cannot find where to insert a new category.

http://wordpress.org/extend/plugins/store-locator-le/