FYI, if you look at blocksuckernation website, it says you need to specify the stratum as:
-o stratum+tcp://old.blocksuckernation.com:
So your file needs to be:
ccminer -a nist5 -o stratum+tcp://old.blocksuckernation.com:3833 -u WALLET ADDRESS -p c=BWK
pause
(give that a try in case you get errors)