Flickr Shortcode not recognized?

Hi!

I was very excited to find this Plugin but unfortunately I’m having difficulty.

When I press “Import Flickr Shortcode” under ‘Tools’ the following message appears:
“All done. No [flickr] codes found in posts”

Below are examples of the codes I have in my Posts. Are they not compatible? Maybe not the iFrame… but at least the others? Am I missing something?

Thanks in advance!

<a href="https://www.flickr.com/photos/14646075@N03/3551797813/" title="Museum Brandhorst by digital cat ?, on Flickr"><img src="https://farm4.staticflickr.com/3632/3551797813_21663da049_z.jpg?zz=1" width="640" height="426" alt="Museum Brandhorst"></a>

<a href="https://www.flickr.com/photos/28481088@N00/3731283554/" title="Museum by tanakawho, on Flickr"><img src="https://farm4.staticflickr.com/3475/3731283554_9d14d43277_z.jpg?zz=1" width="640" height="391" alt="Museum"></a>

<iframe src="https://www.flickr.com/photos/28481088@N00/3731283554/player/9d14d43277" height="391" width="640" frameborder="0" allowfullscreen webkitallowfullscreen mozallowfullscreen oallowfullscreen msallowfullscreen></iframe>

https://www.ads-software.com/plugins/flickr-shortcode-importer/