Amazon still hasn't fixed this issue on our end, which prevents us from creating wishlists with shipping addresses containing special characters.
Posted Jan 19, 2022 - 10:55 PST
Investigating
currently, there is a bug preventing any address that contains special characters from being used to create orders, regardless of whether you enter it with the special character or not (eg: using e instead of é). We are working on a fix for this and hope to be finished in the coming week.