I used to have the same problem as you. I believe is only on Aigis as I play with other Nutaku games and dont' have this issue. This issue repeat over and over every times the games update or when they decided to have the server maintenance. You shut down your internet modem or router and turn it on again, wait until your internet is online again and refresh the page. Your games should start downloading the update at this point. Beware your will need to do this again and again every time they do it. Hope this help you.