Ditto - this seems to be a system wide error - “Failed to get upload status for xyz”. Its an amazing function so would be very happy to see it return!
As a moderator I will let you know that OpenAI does not have a human monitoring this forum. However there are a few OpenAI employees who on occasion will pop into Discord. The same is being reported on Discord.
Also for those that are not aware when OpenAI acknowledges a problem it will be acknowledged on the official status page.
Sometimes an incident might be mentioned on X, (formerly Twitter) but I never had and never plan to have an account there so can’t check.