I am not sure if this is the right place to post this inquiry.

In AU, I have an old account with only 1 rep which I have used for about a week. I forgot the password for that account so I then created a new account (this account) which I have been using for almost a month now.

My old account was flagged to be merged with this account. Now SE or so I think, does not allow me to talk in any SE Network chat saying that I need at least 20 rep to talk in chat.

Does this mean that in Ask Ubuntu I have 600+ rep but on SE, I only have 1 rep (which was my old account's rep)? What should I do for SE to recognize my user profile (credentials) from AU?

On AU, this is my user profile:

On SE Chat, this is my user profile:

Every time, I click on my username (circled above) from the SE Chat page, it leads to a Page Not Found on AU site.