Click Done. The connection to the video conference is established automatically. If the meeting is not updated, exit and join again.
Use of Hangouts Meet via smartphone:
Via the Google PlayStore you can download the app free of charge and register with your existing Google email address (which you also use for the PlayStore). When you tap on the meeting link, the app will open automatically.
To use the free Hangouts Meet app you have to create a free Google email address in advance. Use this email address to log in to the app. When you tap on the meeting link, the app will open automatically.