You can change your profile name both in the app and website. 

Here's how it works in the app:

1. Click the hamburger menu on the left

2. Select settings

3. Tap you name and/or lastname in order to change it

4. Click save

Here's how to do it in the website:

1. Click your icon on top right and select "settings"

2. Change your name and/or lastname

3. Click save in the bottom right of the page