Tried Cosham proxy and it works !
cosh-cache-4.server.ntli.net
These proxies I tried earlier do not work with streampowered.com as well as my Poplar default ones:
swan-cache-5.server.ntli.net
hers-cache-8.server.ntli.net
bagu-cache-4.server.ntli.net
colc-cache-4.server.ntli.net
Why do we have to continue to put up with these useless things 