The following smart contract address is what you see on PolygonScan: 0xc37d3c4326ab0e1d2b9d8b916bbdf5715f780fcf - this is a "proxy" address used mainly for security purposes. The actual smart contract address is 0xa9a6a3626993d487d2dbda3173cf58ca1a9d9e9f (as shown below).
Currently, the MetaMask web wallet (on the browser) does not have a section to view your Layer 2 collectibles. Alternatively, you can add our contract address as a Custom Token in order to view how many domains you have in your wallet.
3. 0xa9a6a3626993d487d2dbda3173cf58ca1a9d9e9f ; 0 on Token Decimal and press "Add Custom Token" > "Import Tokens"
4.- Now, you should see the number of domains on your Metamask wallet:
1) Go to your My Transactions tab. Then click the tx_id_xxxxxxx link.
2) Copy the Token ID
3) Go to your Mobile Metamask wallet and make sure you are on Matic Network. Then click "NFT"
4) Then click "+ ADD NFTs"
5) For "Address", add 0xa9a6a3626993d487d2dbda3173cf58ca1a9d9e9f and for "ID" add the Token ID you copied from Step 2. Then press "Add"
For now, the domain will show up with a picture of a string of numbers. This is temporary as after we implement a fix the domains will look normal in MetaMask.