today I have send message to my friend on what Sapp, but he never receive it. At that moment I not able to view his profile pic and last seen. When he try to send me some fresh message, I have received and then I able to view his profile picture and last seen. I go thru the chat history from the morning, the 1st 3 msg that I sent it's shows (1tick) and the rest he has read(blue tick). Please advise why such thing happen suddenly on whatsapp.