1. About featured image sometimes doesn’t load. Please try to enable Load jQuery Early option. You can find this option on the Customize > JNews : Speed Option > Advanced Options > Load jQuery Early. After that please clear the cache from JNews Speed plugin and your browser cache.
2. About post title can you please go to Customize > JNews : Header Option > Header – Desktop Option > Desktop Header – Middle Bar > Default Link Color (set up the default link color for middle bar).