OP, at the present moment the only significance of the Order that I can see is if the authority re-offer the discount in a NOR, you then have to factor in its contents to your decision making. But as there's no post until Tues. 22nd so even if the discount is re-offered in a NOR then it's likely that you'll be within any 14-day extension even by 6 May.
Wait for their response to your formal reps.