I sent a message to a friend on whatsapp at 5pm and his last seen was at 5.36 but my message still only has one tick. I can still see the profile picture etc so not blocked. What could cause this?
My friend is abroad and I have sent him messages. There is one grey tick next to the messages I recently sent, but when I swipe left it says read with 2 blue ticks but no time of read. How can I know if he has seen my messages?