Issues getting Facebook Domain Insights

Hey, i’m having a problem when i try to link my domain (yellowraindrops.com) to Facebook insights! Hope someone can help ??

This message comes up when i try to link my sight to Facebook:

‘Bad request
No admin data found at root web page “https://www.yellowraindrops.com/”. Insights requires admin data at the root web page for the domain “www.yellowraindrops.com”. Use https://developers.facebook.com/tools/debug to verify that we are able to extract the admin data from your root web page.
Close’

When i go to the debug page these errors come up:

‘ Warnings That Should Be Fixed

Inferred Property The ‘og:url’ property should be explicitly provided, even if a value can be inferred from other tags.

Inferred Property The ‘og:title’ property should be explicitly provided, even if a value can be inferred from other tags.

og:image could not be downloaded or is too small og:image was not defined, could not be downloaded or was not big enough. Please define a chosen image using the og:image metatag, and use an image that’s at least 200x200px and is accessible from Facebook. Image ‘https://www.yellowraindrops.com/wp-content/uploads/2014/10/Yellow_Raindropsv2-221.png’ will be used instead. ‘

How can i fix this?

Christina