In the module paramaters where you fill in the count: for instance 5. This will show 5 items in the list. But when I have 10 articles in a category. The other 5 are not accessible from this list.
Is there no option for pagination? For instance show next five items.
or 1,2,3,4,5,6 >; each page showing the next 5 items.
Otherwise the list can get very long when there are a lot of items in a category.

Nel Haalboom

It is not possible to add pagination, to do that you would need a full Joomla component.

If you want to have a longer list you could try using the accordion layout, it will take up less space because you will only see the article headings - or the rotator layout.

You need to understand that the module is not intended for displaying long lists of articles, it is designed to feature smaller numbers of articles. That is how we describe it clearly in the marketing, and indeed in the name. You seem to be trying to use it for a purpose for which it was not intended.