In my articles you do not see the ability to navigate between the previous and the following.
In the categories I put the paging visible, even in the menu but nothing changes.
May depend on what?
In the articles instead of k2 navigation you see ..
<?php if($params->get('itemNavigation') && !JRequest::getCmd('print') && (isset($this->item->nextLink) || isset($this->item->previousLink))): ?>
<div class="itemNavigation">
<span><?php echo JText::_('K2_MORE_IN_THIS_CATEGORY'); ?></span>
<?php if(isset($this->item->previousLink)): ?>
<a class="itemPrevious" href="<?php echo $this->item->previousLink; ?>">« <?php echo $this->item->previousTitle; ?></a>
<?php endif; ?>
<?php if(isset($this->item->nextLink)): ?>
<a class="itemNext" href="<?php echo $this->item->nextLink; ?>"><?php echo $this->item->nextTitle; ?> »</a>
<?php endif; ?>
</div>
<?php endif; ?>
<?php if(!JRequest::getCmd('print') && (isset($this->item->nextLink) || isset($this->item->previousLink))): ?>
<div class="itemNavigation">
<span><?php echo JText::_('K2_MORE_IN_THIS_CATEGORY'); ?></span>
<?php if(isset($this->item->previousLink)): ?>
<a class="itemPrevious" href="<?php echo $this->item->previousLink; ?>">« <?php echo $this->item->previousTitle; ?></a>
<?php endif; ?>
<?php if(isset($this->item->nextLink)): ?>
<a class="itemNext" href="<?php echo $this->item->nextLink; ?>"><?php echo $this->item->nextTitle; ?> »</a>
<?php endif; ?>
</div>
<?php endif; ?>