I've changed my device to a new one and lost my game data. How do I recover my old game data?

In Use is displayed and I can't Sell or use as enhancement material.

Can I play with the same data after changing devices?

How do I transfer data to another device?

How do I change my team captain?

The game won't start. What should I do?

How do I make Hidden Skill (Bond) work?

How do I perform a Limit Release?

What are Battle Passes?

How do I cancel synced data?

How do I teach Sub Special Skills?

I lost connection and lost the game.

How do I change a player's number?

How do I use Special Skills?

How do I increase my Friend Points (FP)?

Game crashed or froze.

I have EX Training items, but I can't use EX Training. What should I do?

How do I change the language setting?

I can't watch an ad, or don't see the ads button.

How do I purchase items?