You can stream from your Watch AFL account on up to two (2) of your Registered Devices at any one time.

I’m receiving the error message 'Max concurrent stream limit reached'

You may have given your Watch AFL login credentials to family and friends but now you’ve reached your simultaneous streams limit.
 

You can logout all users of every device that is using your Watch AFL account by resetting your password. Once reset, please log into 2 devices using your new credentials, this will prompt all devices to log back in using the new credentials after a few minutes.
 

You can reset your password here