I have buy 1 month of supporter but I do not see it appearSame thing is wrong with mine, bought 6 months, no response from support. It's almost been a week. You'd be better off trying to get a refund. They must not care about the recent osu supporter problems, as I've seen multiples of these and they have just been put in resolve as invalid.
My supporter should be valid until 28/08 but it has not been taken into account.