Authenticate section

Discuss Median XL!
Chance
Grubber
323 | 3
I can't find any authenticate button in trade center section. Can anyone give me the steps to authenticate account?
Chance
Grubber
323 | 3
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User avatar
Sprow
Core Lord
358 | 20
Common Love Badge
Earned over 20 cookies
Common Auction Badge
Won 50 auctions
enter forum -> click "Trade center" -> top right corner "Login"
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Chance
Grubber
323 | 3
Sprow wrote:enter forum -> click "Trade center" -> top right corner "Login"
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Ok! Maybe my brother authenticate his account to my forum acc T.T. Do u know how to change that TSW attach?