@Sadeeem Same here. I first tried to subscribe while logged out. I received the activation link in the email, but the link led me to the page shown in your screenshot. I then tried to subscribe while logged in, from the auth.opera.com Subscription page. I was charged the second time, but the page indicated that the link was invalid. No activation email was sent to my inbox. On the auth.opera.com Subscription page, it's still the blue "Get It" button that leads me to the Link payment page. Link blocks a third payment, saying I'm already subscribed to the product — yet nothing appears in my Opera account.
Besides, I logged in and out three times before I could turn on synchronisation in the basic Opera browser. I wasn't even able to set a handle name for this forum after multiple login attempts — no error message, no nothing, just zero response after I hit the Confirm button.
Am I this lucky that my first visit to the Opera site happened when it was going crazy?