Try calling the main helpline number as soon as it opens. When I had an issue with one of my applications the second time I called they were really helpful and arranged for me to get a call back 24 hours later from someone who could help. I just used the number on the website then followed the prompts 3 then 8 I think. Calling should hopefully trigger them to look for the documents but they may ask you to report them as lost. The progress team were really helpful for me so they should be able to help you too.