The ability to edit personal details in the Pi Network application is provided to match personal details with identification documents, and you can view it on the main page of the pi application.
According to the Pi Network rule in White Paper, each person can have only one account, and therefore, to establish justice, the core team performs the authentication process, which has other benefits in addition to the above.
Therefore, real pioneers need to match their information with their identification documents to go through the authentication process. You can now edit your details in English and add your native language in the limited time. Also, you can add your email address to recover your account in the future.