Flickr photos no longer working with Oembed

My Flickr photos no longer worked with Oembed. I didn’t make any changes or anything of that sorts. Only the links posted in new posts aren’t working. The ones that were published in the past are still functioning.

It just stopped working today. The URL isn’t been “converted” into the image anymore.

The weird thing is only Flickr stopped working. Youtube, photobucket, Vimeo etc are still working properly for me.

I’m not sure what could be the problem here? My Flickr configuration or…?

All help is appreciated. Thanks!