Latest questions about "status information"

My Viber updated to the latest version a couple of days ago. Since then, I can't see the message delivery status in none of my contacts chat rooms on Android.

I can't log in to CMI + Marker as it keeps coming up with a service status error. I have tried two computers, my Internet speed is fine. This has been the case for around 4 hours.

Received a Viber message Sunday morning. Monday evening replied, was not delivered. The online status said Sunday morning time message was sent to me.