The Purchase Page that the PC and Mac clients use to purchase Tournament Tickets (and Gems if in Canada) is currently in unscheduled maintenance while an issue is being resolved.
We will update this thread when that page is again available.
Pokémon TCG Online
The Pokémon Company International
Need help from the support team? Visit the [url="http://www.pokemon.com/support"]support portal[/url] and submit a ticket!