Hi, I had a problem with WhatsApp last week and today, the problem is that I cannot see a contact on the app but I asked my contact if I was blocked and my contact told me I was never blocked. I can't see the timestamp, the profile picture and the status. And today I tried to send messages to other contacts and O only see one check mark. The rare thing about it is that this problem happened last monday at the same time. Why do you think this happens?