Exactly the same thing happened to me!!! But I got so many different stories until I gave up.

1. First story is that they didn't receive my SMS registration. I asked them to check and they said no registration at all.

I wrote back attaching screenshots of TWO registrations on January and March.

2. Then they said I was disqualified because of 5x / 8x.

I wrote back saying, how come I'm disqualified from Jan and Feb spending, when Swipe campaign only start in March?

3. Then they said I was disqualified because of 1m promo

I wrote in and said I didn't register my WMC for that, and I got my cashback purely from swipes on my VS

But they copy and paste some TNC and repeated themselves.

I was so fed up that I gave up.

Wasted RM240 cashback for Jan to March. Am never going to use this card except to let my friends go airport lounge with me. Super lousy WMC with no real benefits.