Am I to understand you are actually trying to login? Do you get any errors, if so what are they?
Loading our mainsite works fine from my end at this time, if you can't load it up and are presented with a cloudflare error page, could you please try clearing browser cache and retry the page?
I had also had this issue all day, now I am able to log in and go to cPanel I just can't get my files to show up under the file manager? What can I do?