There is kind of wierd issue, few days ago i've checked pset2/initials with check50 and everything was normal at that time. Now I've prepared caesar.c, but something happened, and none of the programs could be checked. Any of check50 2014.fall.pset1.hello hello.c check50 2014.fall.pset1.mario mario.c check50 2014.fall.pset1.greedy greedy.c check50 2014.fall.pset2.initials initials.c check50 2014.fall.pset2.caesar caesar.c returns "Uploading.... server is offline"
I've tried ping cs50.net & ping sandbox.cs50.net - nothing happens. Google is pinging. Also I've tried https://sandbox.cs50.net in browser - it returns HTTP error 503.
Also, I've tried to check https://cs50.statuspage.io/ - everything seem to work normally.
What's going on ?