Request to update username.

Update username to YLSG

Please note that custom form URL's needs to be updated and republish to your users. Custom form URLs with your old username will no longer work.

https://www.jotform.com/help/261-How-to-create-a-Custom-URL-of-a-form.

I went ahead and changed your username from NikLeeYLSG to YLSG. Let us know if you have any questions or if you need further assistance.