If you have lost one of your devices, or reset your browser, you will still be able to recover your account with your seed phrase. You can go to the Circles app and click “Connect to existing account” then “Restore from seed phrase.”
If you have a second device that is currently connected to your Circles account, you can still access your account from there.
If you don’t have your seed phrase saved, and you don’t have access to another device where you are logged into Circles, we can’t recover your account. You are welcome to create a new account but make sure to tell your trusted Circles peers to “untrust” your previous account. Note that if your Safe and Circles tokens haven't been issued (produced), your account was never fully created and there is nothing to restore.