Server transfers have been disabled (and the usual transfer button in the launcher after logging in is missing) since shortly before the launch of Minas Morgul. We have been given no ETA as to when transfers will be available again, and yes, it sucks and has been a bummer, esp since we have also have no info or guarantees as to whether shared storage transfers (previously free with no cooldowns between servers in the same region) will be returning. I suspect it'll be a frequently asked question in upcoming official streams from community manager Cordovan.
Shhh. Listen. Listen to the sound of suffering. Resolve to relieve it. Lift others up. Be kind.