You can connect your Sequence Wallet to a decentralized application by selecting the ‘Connect with WalletConnect’ option.
A QR code will appear, which you need to scan with your Sequence Wallet by clicking on the Scan button; or you can also copy the WalletConnect code and paste it into the "Scan" window in your Sequence Wallet.
How to connect your Sequence Wallet anywhere in web3
Click on the ‘Connect Wallet’ button on the website/application you want to connect your Sequence Wallet.
You will see a QR code appear. If you are accessing your Sequence Wallet on a desktop, simply browse through the list and click on the Sequence logo.
A message will appear asking permission to connect to that specific app, confirm and you'll be able to access it.
That’s it! Your Sequence Wallet should now be connected to the desired application.
When you finish using that app, you can choose to revoke that access from the drop-down menu of your wallet address.
🚨 Note on Opensea support: Currently Opensea marketplace is not allowing NFTs to be listed on the Polygon network. With the latest support for the Seaport upgrade, Sequence wallet is fully functional on Ethereum mainnet.
There are still a few sites for web3 dapps that haven't implemented support for smart contract signatures ( Their code blocks transactions because they haven't upgraded to include EIP-1271)