Question

how to message someone on Brainly once u block them or how to unblock

Answer 1

In order to unblock someone whom u have blocked, follow these steps
---->Go to that user's profile----> click on 'Write a message ' option ----> U will get a alert message which shows that u have blocked that user, under which there will an unblock option. Click on the unblock option.
That's all simple!

Answer 2

For Sending msg u have to unblock
firstl of All open his/her profile on web
Click on send MSG button
new window will appear
on the top of the window u will have option unlock
click on it
the person will be unblocked