I have been playing around with Version 2 Testnet (on Ropsten) and found a few issues:
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Version 2 is not usable on Firefox - the Metamask-popup to unlock the wallet does not appear. It works fine in Chrome
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Even though I have 1 ETH in my L2 wallet, I frequently get the error that more than 50 ZKS or 200 USDT is needed (see screenshot).