You have a Gridseed in the picture there, can you tell me which miner you support that would work with it. You're saying that only sgminer is compatible with your pool, but it does not support Gridseed. Thanks.
We've tested BFGminer for gridseed (http://cryptomining-blog.com/1396-download-bfgminer-3-10-0-for-windows-scrypt-mining-on-gridseed-5-chip-asics/) and it works great.
We haven't tested the cgminer-for-gridseed versions - that said it might be that some of the forks of cgminer-3-7-2 with gridseed support might have been patched with upstream patches from latest cgminer and they might work - just give it a try - connect your miner to stratum+tcp://stratum.nicehash.com:3333 - it will start hashing instantly and if all that you'll get are rejects, then your software is not compatible with our service - however if you're getting accepts then you're already earning bitcoins
... btw ... cgminer 3.7.2 is an really old version and we really encourage you to use newer versions or alternatives - besides security patches there are also speed improvements in newer versions/alternatives. 
