This does belong in the Game Help boards, but it doesn't really matter at this point, it can be moved.
Though, in regards to possible solutions to this. have you tried logging into the the User Panel on the Home Page and resetting your character's location? I checked myself and I can seem to access Kiwimbi Beach just fine. Though, I do believe that you could be lagging and glitching like this because it is possible that your PC cannot handle the mass amount of objects used in that particular map.
Character Reset.
The Character Reset is a very useful tool. This was created so users can reset their character's home, as well as relocate them without being in-game. The main use of this method is so people can access their characters that might have gotten stuck somewhere in-game. For example; you can use this method if your character(s) get stuck in a map, or get stuck connecting to a map. This was introduced so users would no longer have to completely re-make their characters every time their characters got stuck somewhere.
(http://i.imgur.com/oV4seRo.png)
It is pretty self explanatory. To reset your character's home, you just need to select 'Reset Home'. This only resets your character's home to Lonely Cave. You cannot use this method to teleport to any destination you in Feral Heart, only where your character's home is set. As for 'Go Home', that just easily sends your character back to it's set home. It is recommended that if you get stuck in a map that you select 'Reset Home' then 'Go Home' to fix the issue.