Building an address also does not imply that it exists about the Tron network. You will continue to should activate your account by sending it some TRX or registering it with their protocol. (As normally, Really don't ship TRX to testnet accounts or they will be lost endlessly.) TRON wallets https://sectordirectory.com/listings307693/trx%E9%92%B1%E5%8C%85%E5%9C%B0%E5%9D%80%E7%94%9F%E6%88%90-no-further-a-mystery