Why Won't My Photo Upload?

The photo I tried to upload on Zoosk doesn't upload but I can attach it to normal emails or use it on Match.com, so why won't it upload onto Zoosk? It says 'uploading photo' but then nothing happens or the browser box is filled in with the photo link but there is no link to continue.'. I did succeed in uploading a different photo but they won't accept it as I'm not on my own in that photo. Of course there'no Customer Service to respond to the email I sent them asking about it. I think it's a 'jpg' photo.