Hello Meester Ontwerpers,
Thanks for writing in! You have several licenses assigned to different urls. We cannot figure out which one you are experiencing these issues. By default, most recent items will be displayed in your blog index. You can either display excerpts or full contents in your blog index. Simply go to X/Pro > Theme Options > Blog > Full Post Content on Index and enable/disable the option.
If you want to display specific categories in your blog index, this option is only available if you use Ethos stack. Simply go to X/Pro > Theme Options > Ethos > Blog Options and enable the “Filterable Index” option. To know more about it, please check out “Filterable Index” section in this knowledge base article:
Hope this helps.