Plugin not working

I found the featured image is not hidden on WP 4.7.1, but adding the following line in your plugin makes it work on 4.7.1

.single-featured-image-header img{ display: none !important; }

so the style will be,

<style>
.has-post-thumbnail img.wp-post-image{ display: none !important; }
.single-featured-image-header img{ display: none !important; }
</style>

same problem here … BUT that fix above works beautifully – except now I have a double image on the home page – which I also want to stop – is there another line of code that I can use for the home page ??

eg: https://andanotherthing.co

note I have two avocado sandwiches

if I remove that line of code – I have one

but then here:

https://andanotherthing.co/2017/01/fat-finds-favor-on-u-s-tables-again/

the avocado will also appear at top of post

I am only using featured image to force the correct image into social networks

any and all ideas appreciated

thankyou

Need some help, the plugin isn’t working for me either .

i guess the plug in is abandoned ? in the end I deleted it – did not do what it said on the tin … and no response from the developer