How to change username in Co-Star astrology app?

so to change user name in codestar app tap on chart in top left tap on settings and tap on username or just tap here on username and then you should be able to change it from here so for example you can try that and then you will see if it's taken or not um uh so that's uh how it works as you can see a lot of them were taken and then yeah then you just changed it and that's it you can also add phone number facebook here and then okay tap done in top left and then if i go back to settings it should be changed yep