Warning message 'Please login / register' will be shown when api_key and api_secret are empty. 

Warning message 'Please login / register' will be shown when api_key and api_secret are empty. 

Before module showed warning 'Please login / register' if connection with api_key and api_secret was not successful but it did not do API connection if both api parameters were empty so warning message was not shown if both api parameters were empty - fixed now.