I'd like to change my information in fan club community.

As a BASIC member, you can change it in the third tab on the right in the fan club community,  "Settings > Modify fan club membership." 

For ACE members, at the first entered member information cannot be changed. 
If you would like to make an inevitable change, please send us the fan club membership card number (16 digits ) and a copy or photo of your passport to help@lysn.com.