I am seeing this grayed-out/inactive Settings screen under macOS Sonoma 14.3, SeaDrive 3.0.7 and Seafile CE 11.0.5. Quitting and restarting SeaDrive will restore the Settings window, at least temporarily.
Coincidentally, perhaps, the ‘pipe client failed to connect’ errors are accumulating in the seadrive-gui log:
[02/03/24 11:39:47] pipe client failed to connect to server: Connection refused
Update: Broken Pipe error is showing in Ventura 13.6.4 also. The Ventura system shares an account with the Sonoma system.
[02/03/24 16:11:47] failed to send rpc call: Broken pipe
[02/03/24 16:11:47] failed to get sync errors: Transport Error
[02/03/24 16:11:48] failed to send rpc call: Broken pipe
[02/03/24 16:11:48] pipe client failed to connect to server: Connection refused
[02/03/24 16:11:50] pipe client failed to connect to server: Connection refused
Update 2: When Accounts > Select Account > Delete is selected SeaDrive quits but on re-launch appears with the “deleted” account in place.