Since last night, every code I try to submit either fails to upload entirely, showing an “unexpected error” after 10–20 seconds, or it uploads successfully but immediately enters the judging queue and never gets processed, even when the site is not busy.

I live in Iran, and I would like to understand whether this issue is related to sanctions or if it is a problem on the Codeforces platform itself. I have tried submitting from different devices, browsers, and internet connections, but the problem persists in all cases.

Is there any known solution or workaround for this issue?