Trouble connecting to @mis solution in OpenGround and you're sure your login details are correct, you may find the connection is blocked by a proxy.
To fix this you will need to ask your IT to add the @mis URL to the Proxy Exception list.
The URL to add is;
https://myals.alsglobal.co.uk/atmis.v5
For further information about @mis please visit this page;
http://alcontrol.com/en/alcontrol-mis-pan-european