Vinyl Engine

It's not a log-in thing, it just comes up with the 'server stopped responding' thing. I've tried on my desktop, iPad, iPhone, and my wife's iPad (even though she had 103 tabs already open....) and get the same response, even in private browsing - although I'm not sure if Vinyl Engine ever works in private mode. I'll try re-setting everything and maybe try my son's PC. Thanks for all input!
 
It works if I use mobile data on my phone, but doesn't work using broadband here at home, either by Wi-Fi or Ethernet. Tried on PC instead of Mac, still no joy. Using Tunnelblick on iMac I can access the site but as soon as I turn off the VPN to log in it stops working (I'm aware they don't like VPNs, but surprised that I can access the site at all) I have re-booted the router, and still no joy. At least I know it's not a problem with the site per se, but must be something to do with my internet connection, so probably a subject for a thread somewhere which can help IT illiterates like me.... Thanks!