This sub forum is usually for pool issues, your pool seems to be working fine. The problem you're having
might be better discussed in the mining section.

The problem is no devices. You need  something to mine with, a GPU, an ASIC, even a CPU depending
on the algorithm. Cgminer is usually used for ASICs. If you have one connected is isn't being detected.


You also need to post more info like your hardware setup and the coin, algorithm you're trying to mine, and of course
the device you are intending to mine with.