We can now change your primary email (username)!
Send in your request at firstname.lastname@example.org and we'll guide you through the process.
Note: If you used your existing Google credentials to create your Covve account, instead of providing a username and password it's still not possible to change your username from our part. You will need to follow the workaround mentioned below.
The email address used to signup to Covve also acts as your username and it's not, unfortunately, currently possible to change it.
The only workaround for now, is to actually delete your account, reinstall the app and signup with the new email.