How do I set up Google Talk/Hangout in Pidgin?

I'm using Pidgin and it works great. But I have trouble getting my Google Talk/Hangout account running. I'm getting the error message: "Not Authorized"

I found the following link but nothing works for me. How do I set up Google Talk in Pidgin?

I can't find the Google settings for less secure apps in my Google account.

Here are my settings:

Basic Tab:

Protocol: XMPP
Username: myUsername (without @mydomain.com)
Domain: mydomain.com
Resource: Home
Password: myPassword
Checked Remember password

Advanced Tab:

Connection security: Require encryption
Connect port: 5222 (default)
Connect server: talk.google.com
File transfer proxies: proxy.eu.jabber.org (default)

Answer

I can't find the google settings for less secure apps in my google account.

When signed in to your account, go to My Account, and in the "Sign-in & Security" column, go to Connected Apps & Sites. Third option down on the right is a toggle for allowing less secure apps.