Argent wallet only supports Ethereum mainnet and Layer 2 on zkSync.
Argent is NOT compatible with any sidechain or other Layer 2, including Optimism, Polygon, Arbitrum, Starkware and others.
Please do NOT use these scaling solutions with Argent unless we announce that we're compatible with them. You will lose your assets if you use them before this.
We do not plan to support sidechains in the nearest future, but we are working on Layer 2 opportunities.