Accenture India — invalid loa submission

Accenture has requested me to upload a scanned copy of the loa i have followed the same procedure as directed but inspite of several attempts it is showing as invalid loa. I even checked the size of the file it is less than 100kb and also i tried uploading the file by chnaging the format (. Pdf,. Jpg) even then result is the same it is the same case from past two days and the last date for the form submission is today (6th dec, 2019). I request the concerned authorities to kindly look into this matter and resolve the issue as early as possible