I used to have two email addresses, but I now seem to have only one, the problem is, it's the wrong one.
The e-mail addresses were [xyz@abc.ch](mailto:xyz@abc.ch) and [xyz@abc.ch](mailto:xyz@abc.ch). I can login in to the latter, not the former, but when I log into the latter, it shows my primary e-mail address as the former, and I want to change that.
The e-mail address I want as my functioning e-mail is isabella.raper.
Is there any way to change the primary e-mail address listing, and to then delete the address isabelle.raper@bluewin?