Hello Kalvothe.
I have a simmilar problem. I used an email which use a personal domain name and could be lost in some weeks. I would like to change it to a gmail.com I have or, at least, let us add a second email address and somekind of Edit function so we can modify everything. Its very important, as I activated for security reasons the Two Factor Sign option.
Anyway, I have used this way and filled out that form after trying tons of things during the last month.
Can you make this happen?
I dont get any answer from noone.
Thank you.