Format of address is
beam_address.worker/[email protected] email is used for notifications when miner goes down.
Make sure your wallet is running and synced before requesting for a payment otherwise your request will be cancelled.
Older miners which do not support the "nonceprefix" parameter is no longer supported. Recommended miner for NVIDIA is GMiner and for AMD is lolminer or Bminer 14.1.0 .