Got approved for the Personal platinum mastercard through above link.
Was using Chrome incognito and submitted application but I received an error message saying there was a delay in processing the app.
Applied again with firefox and submitted just fine. Had to call Recon line since I am a first time Citi customer and they said the first app (through chrome) had gone through and they threw away the second application submission.
Anyway, thanks for the great community here. I've been an unregistered lurker for over 2 years...and first time posting because I feel I should start giving back with at least data points.
Cheers