Swappy does not offer you a self-serve function to change your username.
It’s important for you, as a Swappy member, to understand that your username is your identity within the Swappy community and is also instrumental in building a trustworthy reputation with other members.
In the event that you think you need to change your username you will be required to send your request to the Swappy support team for review. If they decide in your favour they will communicate with you and make the necessary changes.
To send the request you can either use the "Chat with us" or "Contact" floating icons on the right hand side of each page within the Swappy website.