Any ETH address need to get started with 0x and include only hexadecimal figures (0123456789abcdef), so the letters r and i cannot be current. Certainly, ethereum addresses are case-sensitive. You will need to use the correct capitalization when entering an address to guarantee your transaction goes to your supposed recipient. https://zanenmjgc.ssnblog.com/28809113/what-does-trc20-token-generator-mean