Do not use the Send function in your Ronin Extension for this. That's for Ronin to Ronin transactions ONLY.
Ronin to Metamask
Use the Ronin Bridge Withdrawal for Ronin to Metamask Transactions. This is not for Ronin to Ronin or Ronin to Binance (RON). Please use this link https://bridge.roninchain.com/withdraw.
This procedure involves a 2-step process. First you confirm the withdraw in your Ronin wallet. That will send the funds to the bridge, at this point the transaction cannot be canceled. Once your funds are transferred into the Ronin bridge you'll have to sign a transaction in your Metamask wallet to send the funds from the bridge to your Metamask wallet. You will need ETH in your Metamask to confirm it.
Make sure that you're entering the correct information on the text fields. Do NOT put the Axie Infinity Bridge Contract on "Ethereum Address". Doing so will send your funds to our smart contract. Funds sent to our smart contract cannot be recovered.
Put only your Metamask Address on "Ethereum Address". The Bridge will not work for other exchange wallets such as Coins.ph, Coinbase, CoinEx, KuCoin, and many others. If you withdrew to an address that's not a Metamask address, your funds will be stuck on the bridge. Sky Mavis won't be able to provide help with this.
Cancel Pending Withdrawals
You cannot cancel withdrawals once they are confirmed in Ronin. Make sure to double check the amount and the address you're going to send your assets/tokens to. No one can cancel or modify the address where the assets are sent to.