Share your experience!
My massageing app is not working.
Hi @Dm15, sorry to hear about this. 
Would it be possible for you to elaborate a bit on what kind of behaviour you are experiencing with the messaging application?
You can try and clear data for the application as this will not remove any conversations, it will only reset the application. To do that, go to Settings > Apps & notifications > App info > Messages > Storage > Clear data > OK.
Let me know if that helps!