Timelines as per FTA

5 working days notice given by FTA to submit VD on a Refund Application. On 5th Day, at 5.30pm, VD & relevant documents submitted online FTA portal. FTA rejects the Refund Application stating the required info not submitted with in time period allowed!! Q1. Does FTA have a fixed working hours for filing documents online? If so, by what time we need to upload latest? Q2. For submission of VAT Returns, I believe, Cos are allowed to upload till midnight on 28th (last day)? please advise.