Weird text message notification: iOS 11.2.6 - iPhone 8 Plus

So my wife has an iPhone 8, iOS 11.2.6 and started receiving some of her text messages (non-iMessage) as something different. 1- it appears as a grey box with the header SMS Message.

2 - Message always starts with (phone number): then the body is the message.

3 - The screen is all black on the phone, no matter which application you are using.

Any thoughts on how to fix this? This has been going on for days now.

Thanks!