hi
I believe there is a small black v for delivered, 2 for distributed, and blue when read - the message -
Personally, I don't like this change that occurred with the new Viber application because on my computers I can hardly see when the small Vs are black, gray, or blue
We need to ask Viber to change and improve this; it was much better before with distributed and READ
Best regards
P.S. You have to write to Viber support contact ....