Featured images not showing

Hello,

I am using “Nelio External Featured Image” for external featured images.
https://wordpress.org/plugins/external-featured-image

Its not showing Featured image. So i contact the Image Plugin Author.
Please refer the below url.

https://wordpress.org/support/topic/not-working-with-wp-touch?replies=2

and this:
https://wordpress.org/support/topic/it-work-like-magic-but-some-are-not?replies=4#post-8028626

https://wordpress.org/plugins/wptouch/