Just to confirm that you are not doing something really really bad
-wd 1 -r 1 -epool stratum+tcp://us1.ethermine.org:4444 -ewal
((wallet)) -esm 0 -epsw x -allpools 1 -mport -3333 -asm 1
You did actually put your ETH wallet address in this part?
The dev fee basically means that you are mining a little into a different wallet (the wallet that belongs to the software developer). Think of it as developers tax. It is like the tax man taking a portion of your wages. For clarification, this is not going to SMOS, it is going to whoever developed the mining software. Every good mining software has a developer fee, its better not to think about it.
Oh and by the way, you are posting in the wrong forum board, hence why no responses.