I got a message from Viber last night (when I was sending the same message to my friends - that I will use this number from now on) that Viber is considering my message as Spam and that will block my account. I didn't see anything strange last night, but now I can't send messages. I can receive and when I send it's written that a message is delivered but actually it is not. What is going on? Is my number blocked or not?