No option to buy game time with gold

[Sniperorc-azgalor (Sniperorc)]

9.2.7 Auction House is Temporarily Closed

Update 8:30 p.m. PDT We’re very close to finished with the part of the fix that required we keep the AH closed. The AH should open up on all realms in the next few minutes. As we take further steps to return player accounts to their previous condition, a very small number of players will be locked out of their characters for an additional time. We’ll return them to availability as quickly as possible. Again, we thank you for your patience. Update 6:45 p.m. PDT We were able to determine the …

Although it’s been overnight (NA time) since you asked, that blue post from last night would indicate that the AH should be back open by now.