The router time has to be set to GMT +00:00 and DST has to be unchecked.
This is because the router’s time has to be the same as our servers time to sync properly.
After making the changes you have to wait untill the routers sends the next life signal which can be up to 1 hour.
Please see this article:
http://www.hotspotsystem.com/deskpro/kb_article.php?ref=7576-RKZX-8095
