In the app
Within the profile tab, choose “Edit profile” and press “Name”. You can now edit the name that is displayed in this section.
On the web
The same options available in the app will appear if you press the profile icon or the picture in the upper right corner.
Why is my name different in the group? Your name in the member list may differ to what you have set on your profile. That is because the group administrator can change the name viewed in the group. This does not affect your profile, only the member list in that particular group. Get in touch with the group admin if you wish to change this.