Onboarding - some issue(s) here

Hi everybody, my first post. I’m using a RPi4B with the standard image to install Home Assistant.
On the welcome page, when typing in your name, a suggested username is created (lowercase) so it goes Fred Bloggs → fred. Now, that’s not my preferred username, so I over-typed it. It appears to completely ignore this and retain the ‘fred’ variant. It took a while to figure this out, including add a new admin user which could not manage the original user (could not delete or change it) - another issue?

My solution was to re-flash, re-start and accept what I was given. Not an ideal start. I guess this may confuse others.

On the plus side, using the forum, I have connected my old Foscam SD cameras (F18910W). Thanks