All of the above!
Recent Chrome updates are flagging sites that do not use encryption as "Not Secure", which is kind of correct, but not. Just because a site has SSL does not mean it is secure, just that data that flows between the website and your web browser is encrypted and can't be meaningfully viewed by any third parties (99.9999% of the time). Chances are that you actually want other people to view the data you are sending to this site anyway, so as 12thharmonic said, it's not particularly crucial.
That being said - I'll get us all secure in the coming week.