BLANK WHITE ADMIN PAGE- LOG IN COOKIE ERROR

Hello,
I had not made any changes to my web page since a few months ago. Nor had I updated my theme or wordpress. The last change was an automatically update to WordPress 3.8.4 in August. My site is https://www.kangtai.cl

When I tried to go to the admin page a few days ago I got a blank white admin page.

When I attempt to login to my WP site, the following error message shows:

“Cookies are blocked or not supported by your browser. You must enable cookies to use WordPress.”

However, Cookies are enabled. Never had the message before, and with cookies enabled in all browsers, you still see the message.

I have done many of the solutions I found in the forums including adding/removing lines from config and wp-login files. Deactivated all plugins/themes. Nothing seems to work.

Any one else experiencing this or have a suggested solution? All help is appreciated!