You need to change it in the plugin itself for both Social Share and Instagram feed.
1) For social share, it is located at : wp-content/plugins/jnews-social-share/class-share-bar.php
Go to line:527 and replace with this code:
For Instagram feed, edit file located at : wp-content/plugins/jnews-instagram/class.jnews-instagram.php
Update code on line:108 with this code: