I get the following error whenever I try to purchase something from the Millionaire Center even though my counter ran out hours ago.

"Oh No! You've got 30 seconds until you can buy again!"

This happens to me sometimes in the Zombie Den, but then I wait 5 seconds and it's ok. Also happened once to me in Token Shop. My counter was in 1 minute, I waited 1 minute and then it showed 30 seconds. Waited 30 seconds and it showed 45. I forgot about it and a few minutes later I was able to purchase. Didn't reported because I thought it was against hurry (probably some security agains autobuyer, idk).

But it seems you still can't purschase, right?

Yes, I still can't buy anything. I try to purchase stuff from the MC the moment the counter runs out and from your description, I suppose that's not a good thing. :S

I guess that's stuff for a ticket, then.

I had this problem a couple days ago in Subeautique, I think it was. The timer was 30 seconds and after it was up I tried to click the item and then it said I had to wait 45 seconds. I waited a couple minutes and then I had no problem buying it.

The issue hasn't resolved, unfortunately. I've filed a ticket. Thanks all for your responses. :)