Hi Cheuk

Thanks for posting in the Lucid Community! You can make this change through your User Settings page. For more information please view this Help Center article. Make sure you click "Save Changes" in the top right of your screen once you've made the changes you would like. Hope this helps!

If you anyone else out there is experiencing a similar issue that you would like for us to take a closer look at feel free to reach out to us at support@lucidchart.com. Cheers!

I did click on "Save Changes" in the top right. My name was updated at first but it reverts back to my old name once I refresh the page. 

Hi again

Thank you for the reply! Because this deals with your account I'm going to go ahead and create a ticket for us to take a closer look.