I’m a female member.

Maezawa here. LINE is now unified, although it’s still divided into two systems nationwide. If you want to contact the staff at the branch where you registered, just message them through that LINE account. If you don’t know the staff member’s name, you can write something like, “I’d like to speak with someone from the ○○ branch,” and someone from that branch should respond. However, we’re currently working to standardize things internally, so even staff from other branches should be able to assist you.