how do i send a message to other players that I managed to finish a tile

Question

I see this message from other players that they have managed to finish a tile but I don't seem to have the capability to do just that. Anyone, plz let me know. see attached screen shot

gemkhat · Answer

Where do you go on the app to write a message? Thankx

gemkhat · Answer

DDid You ever work it out? I can't seem to be able to message either  :(

MirnaMi · Answer

Well, it's said "Send the message". Click on this and you can send only 3 messages. I wish I can send other messages too. Especially when someone or something take the tile and stays there forever.