It is a function that connects the game and the wallet.
You need to install the wallet app to link the wallet.
Recommended wallet app: MetaMask
(Wallet linkage is per account, not per world.)
When wallet cooperation does not go well.
- Change the mainnet of the wallet app to "Matic".
- If you tap "Connect", you will be able to go back and forth between the game and wallet multiple times, so please follow the on-screen instructions until "Linkage completed" is displayed.
- If the above does not solve the problem, restart the application.