emergency! how to change username?

Hi, I use my custom url of my forms and for example it's displayed like this:

jotform.me/rezamezerji/cv

but I don't want to show my username (rezamezerji) to people. so, is it possible to change my username to:

ELC724.com

or

ELC724

if it's not possible, what else can I do? can you change my custom urls? or something else just to not show my username to people?

plz help me!

Hi,

Your username changed rezamezerji to ELC724.com.

Please, let us know if you need further assistance.

Thank you.