Some things to keep in mind when using the portal to purchase ticket packages:
Once you've logged in, you'll see a window like below:
When you checkout and complete your purchase, the site will pop up a window with your pick up vouchers, so turn off any pop-up blockers in your browser. Note, your vouchers are also e-mailed to you to the e-mail address you specified in your profile. The e-mail stated that they can't resend vouchers, so don't lose the e-mail, otherwise you'll have to go do in person to get them.
I did see a bug where on the checkout screen, the line item price for 2 programme books I ordered was incorrect even though the grand total was fine. Purchase went through without any problem, though, and I got the correct number of vouchers.
Speed is now back up as well; the portal was initially very, very slow.