I need access to the Fireblocks sandbox to continue dev of a digital trade settlement platform - it expired before I was able to fully integrate it. My workspace is Klaros Ltd, under Frank Reeves. Grateful if I could have access to the sandbox, thank you! Also, please advise how to enable Arc Testnet as a custom EVM:
Chain ID: 5042002
RPC URL: https://rpc.testnet.arc.network
Native Gas token: USDC (testnet)
Block explore: https://testnet.arcscan.app