Hi,
There is an issue with our x10Hosting Basic theme, where a blank page is displayed when you have hit your disk quota. I have manually changed your theme to the cPanel x3, so that you can access cPanel. I recommend you remove some unwanted files, and then switch back to the x10Hosting Basic theme.
I took a quick look at your account, and it appears the directory "wp-snapshots" is consuming the most disk space.
Thank you,