@marekd Hello. This is formerly korvinae. It took me a while, but I found the email I used to register on my iPhone. You were of course correct, korvinae user account was not linked.
If I may, one suggestion would be to be able to see which email you are logged in with on the windy iPhone app, because usernames don't have to be unique and so I couldn't see anywhere in the interface which email was logged in.
Thanks for your help and apologies for the confusion.