I prefer to use NBMiner here to mine with AMDs
This is the command line: nbminer -a kawpow -o stratum+tcp://us.rvn.minermore.com:4501 -u RP5YmcARPwuhytDGnKncYj2CvAwyGJ8Hpy.5700
Simple like that, first command to start the miner, second to specify the algo, third to specify the pool and port (minermore is a good pool), and them my wallet period name of the worker (just a name you can write to identify on pool)
Remember, it's good to download always the latest version
Download From Github Release:
https://github.com/NebuTech/NBMiner/releases