I’ve tried used a couple of different plugins on books.thewritepractice.com to ensure images are appearing in the feed (RSS feed with featured images | RSS Chimp and Featured Images in RSS for Mailchimp & More). Have both turned on now so you can see.
I’ve checked the feed and it appears that images are correctly appearing in the code.
Under “content” tab, can you please set “Fetch thumbnail from page directly” to “no”?
The thubmnail works fine on my test site. There is no reason for it not work.
Can you please create a temporary admin account and share it’s credentials in my contact form? – https://www.aakashweb.com/contact/. I’ll login and what is the issue.