Not receiving any reward

I have two issues:

A) I have been noticing for 24 hours that I’m not receiving any reward for watching an ad. Both on the Computer and mobile. Hope it will be solved soon.

B) Why am I seeing:

NOTE: This creator has not yet signed up to receive contributions from Brave users. Your browser will keep trying to contribute until they verify, or until 90 days have passed”

on every Twitter profile while clicking to reward?