WhatsApp message blocking is active?

I have WhatsApp on my phone. I have 3-4 contacts on this app that I have successfully had video and audio calls with.


But lately when I try to add someone and try to send a message to them I get a message that says: "Unable to send message - Message blocking is active."


I have looked everywhere on my phone to find the setting that unblocks this message blocking feature, but I can't find it?


Anyone familiar with this app blocking setting, where it is or how to unblock sending messages?


I don't have a problem messaging with already established contacts. Can send pics and stuff. Just can't add new contacts?

My phone is a Android ZTE ZMax Pro, 4G LTE.


Any help with this message blocking issue is much appreciated.

Anyone?

Bump.............