dear @emre,
If a user has a Caller ID popup On the screen and It did not click on it to close it and log out if you press the Caller ID popup on the login screen it logs you in without Password and without a user name.
And that makes all the rules and actions mapped to the user name not working.
Happened many times a user name disappears from the screen but I just realized why this is happening.
It’s not supposed to happen, right?
Thanks in advance
Its not really logged in your just seeing the screen and your not supposed to.
Yes, but then the user enters the system and any rules and actions that are supposed to work do not working
Good catch! I agree I’m sure that’s not supposed to happen either lol.
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@emre,helppppppppp 
@pizzaeilat4 by default we don’t execute popup on login screen and queue it so user logs in to be able to see popup.
However your implementation forces it to popup immediately via device event generated rule and you intentionally taking it to Entity Screen. So you need to check current logged in user and do something different if there is no logged in user. Maybe you can skip displaying popup and store a temp setting for it and when user logs in check for temp number and if exists you can display popup.
@emre
I do not use device event generated rule to force popup to display Entity Screen.
popup execute only when user log in but if the user logs out Before it clicks to close the PopUp it stay on login screen and Another user then clicks on PopUp Instead of typing Password it open the pos screen Without loging in the user. And that causes many problems because in such a situation all the actions and rules are mapped according to user rull not working.
LoL. I remembered it wrong.
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So there is a way to fix it? or just learn to live with it? 
No I’ll hide them when user logs out and redisplay them back when logged in.
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Thank you emre, that would be great.
I’m really sorry I bother you with these little problems 