If you have bridged to a rollup but then find that you can't make any transactions on it, you need to check to make sure your wallet supports the rollup network.

If your wallet does not support the rollup, you will need to import your secret phrase or private key into a wallet that does support it, such as MetaMask.

To see your tokens, or make transactions on a network your wallet must have support for it built-in, or allow to you add custom networks. Wallets like MetaMask allow you to add custom networks.

To add a custom network you need to find details such as chain ID and RPC URL, which should be available from the network's docs. If not please reach out to the networks team for support.