family allowance messaging errors

I just downloaded family allowances app and tested it, but it doesn't seem to limit and prevent sending messages. It blocks on the other end if somebody is sending one to the phone that is being managed. Interestingly it does block sending messages to the parent phone that is managing the app, but messages are not getting blocked when sending inside or outside t-mobile.

When sending a message to the phone the users are getting the blocked message. However, messages are still outgoing from the managed phone and getting received at all others. I have a messaging set to "0" allowance.

Anybody noticing this? Does it make sense to block messaging receiving only but not sending, as my child would not know messages are blocked and just keep sending messages thinking nobody is answering them.