App notification

Hey, in the Admin Portal you can tweak settings using this KB Article - let me know if this helps solve the issue?

I already have SMS set up for all extension and some extensions have three mobile numbers added. No one get any SMS we do get the email.

Have you gone through the TCR process?
This might be a situation that requires some aid from Support. 
 

TCR, I tought that was only if I was going to send SMS.

I see they enter the phone number as a text to the phone number like 999999999@text.att.net

I was surpriced since I tought that was blocked.

Sorry, this fell off my radar, Kim.
TCR is for outbound and replies. 

So, to make sure I understand - you received a blocked SMS message, but received no notification about the message?
 

When there is a missed call or someone left a voice message, I get no SMS or notification.

Okay, so unless you are registered with TCR, you wouldn’t get an SMS notification. You can set up outbound SMS for notifications, but it still requires TCR even if you’re texting your own teams. 
There are other ways to get notifications - including the recommendations I shared in the above article. 
Hope this helps, but happy to have a conversation about this via DM if there are more nuanced aspects to your situation.