Dashboard is not loading

Hi, :D
Im using the boldial Theme and am very happy with it. But for some unkown reason I can´t use the Dashboard anymore :/ It just happens 3 days ago. I can go to the admin Panel but after im try to login its not working its loading but can´t find the Page. I need to try it 2-3 times and have to wait until the page loade. But its not only me.. one of my costumer that use the same theme got the same problem.

She can´t Login and no matter how many time she or me trying to login, its not loading.

You can find my Site here.
http://www.Creativelab.koeln

I hope u can help us :)
Thank you!