If you are getting the message "Something went wrong!" in the CraftAdmin Control Panel, please try to reload the Control Panel and restart your server.
Please read more about the specific errors and their solution below:
All server which are linked to your account are offline. CraftAdmin can only control servers which are running, you need to manually (re)start at least one of your servers to use CraftAdmin.
The server you were connecting to uses an outdated version of the CraftAdmin plugin. Update to the latest version found at craftadmin.net/version/latest.
No server is linked to your account! Please install and activate the CraftAdmin plugin as described in out Getting Started guide.