zkSync (Lite) is a first version of their L2 protocol and it’s not fully EVM-compatible, see
To see a balance and transfer tokens you need to use their web3-application wallet.zksync.io
See Tutorials | zkSync Documentation
It has an own block explorer: https://zkscan.io/
zkSync Era is a second version of their L2 protocol and it’s fully EVM-compatible, so much more Web3 applications can work with it without changes in the code, see
You may configure your current Ethereum-compatible wallet (i.e. MetaMask) to see a balance and make transfers to Ethereum (L1) with their zkSync Era Bridge | Transfer funds between zkSync Era Network and Ethereum Mainnet
It has an own block explorer: https://explorer.zksync.io/
zkSync Lite has a one-time activation fee, while zkSync Era doesn’t have it. STORJ token is currently added only in zkSync Lite, but it’s expected to be added to zkSync Era as well, see zkSync Era payments