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Thank you.
That did the trick :-)
My site was still running 5.2
Steemit Feed Plugin activated & working on my site now.
Awesome!
http://thorhammaraxx.com/steemit-info/thors-steemit-posts/
Now, if @wordpress-tips can find a bit of time to sort out images appearing as plain text as @bryan-imhoff mentioned, I will be truly grateful.

Funny how such an obvious error can slip by us. For some reason my namecheap hosting service was running a 2013 version of PHP.

Site looks good btw. Rock on dude!

Cheers @steemitbc
I had been ignoring the PHP version running on my Namecheap hosted server which is serving a number of sites. Thank you for pointing it out.
I'm pretty sure that I have experienced issues with a few other WP plugins over the years and hadn't considered that the PHP version may have been at fault.
Now I know, it's time to upgrade all the other websites, hosted there too.
Thank you again.

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