After updated to 5.5.4 yesterday open SambaPOS on my client pc said invalid license and I need to put user and password to activate then when I log out on my server pc my and try to open SambaPOS again it not activated anymore, so I clear the key and activate license on my server pc again. And today I open SambaPOS on my client pc become unregistered and need to activate again, 
Thanks
It like I activate license on server my client become unregistered
Then I activate license client my server become unregistered
Do I need to activate client pc…? Because is said unregistered. Thanks
Shutdown sambapos on all terminals. Run license.exe on the server. Start sambapos on the server then after that start each terminal.