If you are being asked to upgrade it sounds like you are not a paid member of the site and the presale is for paid subscribers.

Logged in and dont see any presale details, only details to upgrade my account. Is this the only way to get a presale code to buy tickets today?

When you log into the site and visit the tour page the presale code is visible. Use this code on the Ticketmaster page.

Hi- Does anyone know how artist presale works on Ticketmaster? Do you login with fan club member number etc? Thanks for any insight you can provide.