So I found what the problem is, but where to edit it is what is beating me now.
There is a class called "action-icon".
When I do an inspect on the location that the icon is supposed to be
" a.action-icon{visibility:hidden;}" appears. When the visibility property is changed to visible, it shows icons, not only here, but in the attendance plugin as well.
Only problem now, is where and how to change this properly.