In order for us to give you an NFT, you need to follow 3 steps:
To add Polygon’s Mainnet, click on the Network selection dropdown and then click on Custom RPC.
It will open up a form with 2 tabs on the top, Settings and Info. In the Settings tab you can add Polygon Mainnet in the Network Name field, URL https://polygon-rpc.com/ in the New RPC URL field, 137 in Chain ID field, MATIC in Currency Symbol field and https://polygonscan.com/ in Block Explorer URL field.
Once you’ve added the information click on Save. You will be directly switched to Polygon’s Mainnet now in the network dropdown list. You can now close the dialog.
You have successfully added Polygon Network to your Metamask!
2. We need you to create an Opensea account with the Metmask wallet you previously created.
3. Please send us your Metamask wallet number at firstname.lastname@example.org or via chat and we will send one of our NFT characters to your Opensea account!
Looking forward to hearing from you!