Whew... Slow down ~Pets face~
When I registered, I went to the link on an iPad. But, after seeing a thread where the activation code expired, that may have happened, though I doubt it. PM a staff member. They should be able to sort this out :3
But, try going to the link on an iPad, or just straight up click the link from the email, not copy+paste.
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Eh... Karachiko beat me to replying. Mhen.