How to add username in Whiteboard widget messaging app?

hello everyone so here is this app whiteboard widget messaging and to add your username just go to my profile tab in the bottom and then pick username and then you just need to write that and let's see if that's available so yep now it's a while well that's cool i just picked my first name username so that's awesome and then of course you can just change that if you want to at this moment i don't want to also you can add your birthday why you need to do that because then you can just search for people with a specific username and people will be able to add you or your friends can add you here is your account type private it means that only your friends can send you messages but if you want to do it public you can make it public and this will allow anyone to send you messages even if they are not your friend so uh that's basically it