Why is Block list option not available on Viber version 4.3.1.0?

[Windows Central Question]

Why is Block list option not available on vber version 4.3.1.0

M using Nokia Lumia 520
No updates of viber are coming..
I need the block list option.

 

[ven07]

Re: Why is Block list option not available on vber version 4.3.1.0

Best way to go about this would be to mail the developers Or if desperate, use a different IM app for now