Power BI keeps refreshing

We are facing a strange behavior, for some people who login in to PowerBI.com. When some of our people login they get into a refreshing loop of powerBi.com. which makes it impossible to use Power BI at all, for these users. The strange thing is that I didn't face this problem (as the lucky ones who didn't have the problem) but today I'm also facing this refreshing problem. please look at the following link, which captures the problem in a short video: https://dl.dropboxusercontent.com/u/14608730/nimbus-record-video.webm