Account Switch-Up

Since the downtime, pretty much everything that happened within the past month(except the forums and topics) has been deleted. Well I joined in January, so my account was deleted. But I went on earlier today and I saw that my account was back as a new account(avatar, signature, topics, profile,etc) for Aiyetoro the Onu-Matoran. So everything that I posted before the downtime said "Aiyetoro the Onu-Matoran" instead of "Takua the Chronicler7"(don't worry Aiyetoro it's not your fault). Is there anyway to fix this at all because the main reason I want my account back is that I have a topic in the Buy/Sell/Trade forum that I might have to update(I know I can just start a new topic but I feel it is easier by just editing).