login page doesn't work, just refreshed page?

All of the sudden I can’t log-into my dashboard. https://hockeyshop.jryanonline.com

I am using the correct log-in information. I put the user and pass in, hit the log-in button and the log-in page just refreshes with the my user name still there but the password field blank. It doesn’t give me any errors or anything.

What tipped me off to this problem is I’m using Marketpress Lite and the shopping cart stopped functioning (also all of the sudden, it worked fine until today) Items can be added to the cart, but when the checkout button is pressed it says there are no items in the cart. I was trying to look into this problem when I discovered the log-in thing wasn’t working as well.

Everything has been working fine for the last several weeks, no changes to anything have been made recently. Any idea on what could be causing this?