You cannot unless you make a new account or contact support, they might be able to help.
Yes, you have to be pretty close. In fact, they are people who check these screenshots. Try contacting support at the bottom of the page.
You should probably contact Gamekit support. I don't know if they will grant your request though.
No, it is impossible to change.
Please contact Gamekit support at https://gamekit.com/faq/46/global/contact/
I don't understand your question, please contact Gamekit support at https://gamekit.com/faq/46/global/contact/