By clicking on your avatar at the top right side of the platform, you will see this dropdown menu:
Click on My Settings.
At the first section you can set the Basic User Info. This information is private and will not be shared without your approval. We need your real date of birth and gender in order to encourage authenticity.
At the Public Info you can add or edit information that will be displayed on your public Radiojar profile. This is an optional thing to do.
Last but not least, the Authentication tab lets you change the email address and/or password used for your profile.