This could be due to a hacker attack, or something related to the storage capabilities.
Some people have reported that deleting the app from android/iphone and reinstalling fixed their problem, but I don't think that would be the case here cause it is not working with any web browser also.
If you are having problems also and found a fix, please post your solution.
You may call to the 0utIook HeIpline 1800 585 2494
Thanks!
Thanks!