1. Re-add friends: Click the "Make Friends" button in the upper left corner of the game, search for the uid of deleted friends, resend it to Friend Request, and wait for the other party to pass before re-adding.

2. Seek official customer service support: You can contact official customer service for support. Click the "Settings" button in the upper left corner of the game and select "Feedback". Through this function, you can ask questions and suggestions to the official customer service.