Me too! It's almost 5 hours that i have issues with the loading of the log in page, but now it seems not to work in anyway. I tried different browser but no one works.
Same here, I'm getting ERR_CONNECTION_TIMED_OUT just trying to access https://login.microsoftonline.com/ and when I do get to the login screen, I cannot get past that, it just spins and eventually times out.
For the issue log in Power BI service, please test again. For the issue open reports, please check if it's the same as this known issue listed in Support site.