@Carolina ************
You are not understanding. They are not allowed to grant up to May 30th :/
That is how long a 60 day extension applied for ON the 30th of march <- the day the program STOPS would be good for. 30 of March + 60 days is 30 of May :)
IF they don't extend the program and you applied after the 30th you'd get the 7 days get out of thailand stamp only