The miner in the wallet does work, many on Discord have used it. You just have to select solo mining and enter your address. (Sometimes you have to stop and start it again before it actually starts mining)
There is now a mining pool too:
https://poolmine.xyz/NO, the miner doesn't work, it is trying to call minerd which is not present in the folder. (Windows wallet)
There also appears to be no PUBLIC yespowerMGCP miner, least not one anyone can easily find.
Also you cannot "copy" an address to paste it into a batch file for mining...you have to manual type the full address...
Pretty much a rushed, broken wallet....