Failed to check out license

Hi I have installed DS5 version 2.6 in windows 7 (32-bit).

I have downloaded the zip file (containing setup.exe) and the license file both after logging in my arm account.

When I use the license file which i downloaded. I get the error C9555E: Failed to check out a license.

And I am unable to download new license online I get the error "Unable to execute remote query (response code 503)"

Any help is much appreciated,

Thanks and Regards.