Hey there,

I am really sorry for the delay of this reply as it is a weekend for us here.

The images in the articles aren't showing up in my twitter card: https://theseedsowerz.com/writers-revolution/writers-corner/definition-of-sheeple

Can you provide us with your FTP access so I can better have a check?
I suspect your robots.txt block Twitter unable to retrieve the image file from your site.

Also, the image for the "Stumble Upon" social integration isn't showing up in the article.

That was known issue on Stumble Upon social button, it doesn't support https site, you can check my attached screenshot below.

I added the details in my profile

Hi there,

It seems that we cant access your FTP currently as you can see here https://screencast.com/t/AfGx065AQal. or Maybe you can try to edit your robots.txt.dist using codes below

User-agent: Twitterbot

Allow: /images/



User-agent: *

Allow: /images/

then go to https://cards-dev.twitter.com/validator and paste your link on it and see wheter it fetch your images or not. Please give it a try and see how it goes

Note:
Make sure you clear your site cache first before checking it on https://cards-dev.twitter.com/validator