I don't disagree with your general statement.It was open for two months...don’t wait until the end and it’s not an issue.
But @wllm1313 is still correct. If there is a published deadline, they need to provide adequate support and access to IT resources up until that deadline. They did not.
I personally doubt that it was purely the 'volume' that set the extension in motion. Based on some of the error messages I saw people getting and a basic knowledge of cloud IT - something was awry technically beyond just "volume".