Use products or open sources based on custom symbols to build renko bars. They provide you with almost standard charts, where you can apply your indicators, and objects, and even experts (under some conditions).
Products are in the market (can be free, but mostly priced). Open source stuff is in the code base and always free. In either way, you should try only the things for MetaTrader 5 (renko charts made for MetaTrader 4 will not work in MT5). If a specific source code - such as "renko 2.0 offline" for MT5 - does not work for you, you should contact the author and provide more details what's wrong.