By default, the WETH.e token isn’t visible in your Metamask wallet, even though your newly bridged WETH is in there. To add the token do the following:
First Connect to the Avalanche network on Metamask and select Import Tokens
Next, in the Token Contract Address, input 0x49d5c2bdffac6ce2bfdb6640f4f80f226bc10bab and select Add custom token.
Your WETH.e token balance will now be visible in your Metamask wallet.