If you send tokens to the wrong chain, for example, sending USDC on Ethereum to a Polygon address, you can recover your funds by importing your Polygon private keys into Metamask. 

You can find your Nash private keys here: https://app.nash.io/settings/accounts

How to import your private keys into Metamask

1. Click on the circle logo
   
   
2. Click on Import Account
   
   
3. > Enter your private key
   > Click on Import
   
   

How to add a new network

After importing your private key, you may need to add the network which holds the token since Metamask doesn’t support all networks by default.

1. Click on Ethereum mainnet
   
   
2. Click on Add Network
   
   
3. Enter the credentials below for the Network you wish to add:

Avalanche

Network Name: Avalanche
New RPC URL: https://api.avax.network/ext/bc/C/rpc
ChainID: 43114
Symbol: AVAX
Block Explorer URL: https://snowtrace.io/

Arbitrum

Network Name: Arbitrum One
New RPC URL: https://arb1.arbitrum.io/rpc
Chain ID: 42161
Symbol: ETH
Block Explorer URL: https://arbiscan.io

BASE

Network Name: Base Mainnet
New RPC URL: https://mainnet.base.org
Chain ID: 8453
Symbol: ETH
Block Explorer URL: https://base.blockscout.com/

Binance Smart Chain (BSC)

Network Name: Smart Chain
New RPC URL: https://bsc-dataseed.binance.org/
Chain ID: 56
Symbol: BNB
Block Explorer URL: https://bscscan.com

Mantle

Network name: Mantle Network
New RPC URL: https://rpc.mantle.xyz 
Chain ID: 5000
Symbol: MNT
Block explorer URL: https://explorer.mantle.xyz

Optimism

Network name: Optimism
New RPC URL: mainnet.optimism.io
Chain ID: 10
Symbol: ETH
Block explorer URL: https://optimistic.etherscan.io/

Polygon

Network Name: Polygon
New RPC URL: https://polygon-rpc.com/
Chain ID: 137
Symbol: POL
Block Explorer URL: https://polygonscan.com

Then click on Save