Hi there,
Those 'Accept as answer' will shown to Super Users and Moderator or maybe you can disable this settings
http://take.ms/427a2. Or you can edit/removes those codes below at this path
.../components/com_easydiscuss/themes/wireframe/post/default.actions.php
[gist type="php"]
<?php if (!$post->isAnswer()) { ?>
<a class="btn btn-default btn-xs btn-ed-accept" data-ed-post-qna data-task="confirmAccept">
<?php echo JText::_('COM_EASYDISCUSS_REPLY_ACCEPT');?>
</a>
<?php } ?>
[/gist]
Please advice.