Test THRY only — it has no value. This wallet lives entirely in your browser; nothing but public, read-only chain queries and your own signed transactions ever leaves your device. The key is stored on this device encrypted under your password, so keep that password: it cannot be recovered. Your name is public and stays tied to your address; it lives in a testnet registry, not on the chain, and is reset with the testnet. Clearing your browser data deletes the wallet — that's fine, it's testnet.