Hello my friend
I was trying to activate this add on but I can`t register it to activate it. I am using the serial number send it by e-mail.
When I apply the serial, the page refreshs and shows me the same message.
My nas is a D-Link DNS-325.
"Syncthing is an open-source file synchronization client/server application, written in Go, implementing its own, equally free Block Exchange Protocol. 
Sync folder: /Volume_1/Syncthing
 
Installation Date   
03/27/2016
Version   
1.03
Installation Path   
/Volume_1/Nas_Prog/Syncthing
 
 
To activate the add-on Syncthing, enter the serial number. Get the serial number can be on site dlink.vtverdohleb.org.ua
Serial number: 
Enter serial number
 Enter    
After activation, restart the addon!"