The new lightweight doesnt allow for a custom field. I can modify username on already created accounts. I cannot add a capital letter for a username.
Between all these it leaves me in a messed up position, pure confusion, total mess.
I have a lot of initial users who dont have a username, as we used to use a meta field instead. I cant change that, so I have to scrap username of which i need a unique username functionality. So lets user a meta field, nope, cant do that with lightweight signup. Dead end sending me back to classic !!!