Here are the steps to install RML Flickr Pro plugin:

  1. Make sure you have the latest version of the free RML plugin: https://wordpress.org/plugins/remote-medias-lite/
  2. If not installed, go to Plugins > Add New > Search for Remote Media Libraries and click install
  3. If already installed, make sure it is up to date by going to Plugins > Click Update for RML
  4. Make sure to download RML Flickr Pro plugin on your computer after the purchase.
  5. Go to Plugins > Add New > Upload Plugin and upload the file.
  6. Add your purchased license key (you received from the email receipt) in Settings > Media.
  7. Create a new remote media library in Media > Remote Media Libraries > Add New and select Flickr Pro for the remote service.
  8. Enter a name for your Remote Library in the title field. This name will be used in the media library menu.
  9. Enter your Flickr API key and Secret in the appropriate fields. You can create a Flickr API key and secret if you do not have one already.
  10. Save draft at this point.
  11. Now, click validate. An authentication popup should open. Important Note: make sure to disable any popup blocker at this point, cause the authentication will use a popup to redirect you.
  12. In the authentication popup, login to your Flickr account if you are not already logged in and click OK, I’ll authorize it.
  13. Back to your library settings, you can optionally enter the Flickr NSID of a friend or another flickr user in the Flickr User NSID field. This will access this user flickr instead of your own.  You will see only what this user allows you to see.
  14. Now, publish your Flickr remote library and you will have access to your Flickr account inside the Media Library when editing a post or a page.