Hello
Thank you for using our products.
#1: Find and open file: modules/mod_jo_k2_responsive_slider/helper.php go to line 296 and change file name M.jpg To XL.jpg
if (JFile::exists(JPATH_SITE.'/media/k2/items/cache/'.md5("Image".$item->id).'_XL.jpg')){
$item->imageMedium = JURI::root().'media/k2/items/cache/'.md5("Image".$item->id).'_XL.jpg';
#2: You need see option config "Media max image height" (The Responsive levels (4 level!) are the following (the size of the Surrounding container and not the Browser !!!!): >980px, 768px-980px, 420px - 768px, <420px.<br/>- 320,200,160,120 will set the max-height to 320px , 200px, 160px or to 120px depending on the surrounding container width).
#3: find and open file: modules/mod_jo_k2_responsive_slider/tmpl/grey.php go to line 48 and delete line
<a href="<?php echo $item->link?>"><div class="linkicon notalone"><i class="sb-icon-link"></i></div></a>
Best regards
Bach Pham