Their accounts fx_krystal and fx_amber are both no longer in use, and accessing either page prompts a message that says that the user has withdrawn from me2day.

This is despairing news for f(x) fans because while Amber utilizes Twitter and Instagram generously, Krystal's me2day had been her sole form of communication with fans after she deleted her Instagram. 

So far, Luna, Sulli, and Victoria seem to be updating their me2days regularly, hopefully meaning they will be keeping their accounts.

Tip: masonlee