Please make sure that you're visiting our official Bridge app:
A bridge is used to transfer your asset between supported chains without any losses. Use the Step Bridge to transfer your FITFI tokens from Avalanche C-Chain to Step Network.
Connect your wallet,
Switch the network you're currently on to the Avalanche C-Chain by clicking on the 'Switch network' upright button,
Enter the amount you would like to transfer and click on the 'Bridge' button,
Confirm sending in your wallet,
Add the Step Network to your wallet by using the parameters from the article.