For the recruitment process, selected candidates are supposed to submit an LOA form, the first time I submitted it, as the content of form were not clear enough, I had to resubmit the pdf file. But for the second time, a invalid LOA alert pops up when I tried to submit it. I have been trying the submission since 2 nd March, and the deadline was till 3rd March. I have made a query request on their website as well but no help so far, please...