Actually, some of the documents of mine were rejected and I couldn't re-upload it because of Last date in Nift. What to do now?

Hi there, One of my document as well got rejected and they had given me a time window of 24 hours to reupload it. Unfortunately, I couldn't do it in that time frame. Tried the helpdesk and support mail but I dint get any response yet. I just wanted to know if you found a way around this and it would