How to sign in the Cloud version

Hi , I had finish making the app and now i need to publish it so that others can see my work.  But after hit the run button  and click View in browser  in this URL page , I can not sign in with my account and password i set in my project security which is MxAdmin , x   Can anyone please give a guide on how to setup account and password for the cloud version , i tried search it inside the system but seems there is no relevant settings  I'm just one step ahead to finish my project    Your help is appreciated   Thank you  
1 answers

In short there is no MxAdmin in the free cloud slot.

Use the Demo users instead. Its on the tab right next to the one in the screenshot.