We recommend that you first reach out to your email provider for assistance. 

If the issue persists, provide us with the following information for further verification: 

- Gryphline Account ID (go to the Arknights: Endfield official website > click [LOG IN] in the top right > open [Account Center] to find your ID) 
- The email linked to your Gryphline Account 
- A screenshot or video showing the email malfunction 
- A screenshot of the Check Access page on the official site 
- The new email address you wish to use