The worker name can be between 1 to 15 alphanumeric characters long. Any letter or number can be used, however special characters are not permitted. We recommend using lowercase letters as the worker name is not case sensitive and will be converted to lowercase letters in our system.
We also recommend that you set a unique worker name for each mining machines connected to the pool, in order for more efficient monitoring.
Your password has no restrictions, as it will not impact your mining.