Please allow us to permanently delete or change the original email address used to create our Proton accounts.

Currently, adding a new email address only acts as a temporary alias, because the account automatically reverts to the original, permanent address if a paid plan expires. It would be highly beneficial if Proton could adopt a system similar to how Apple handles iCloud email addresses, allowing users to permanently delete and seamlessly replace their primary address without it being permanently tied to the account's creation.

Additionally, allowing users to change their username would be a great improvement. Thank you!