We are no longer provide build-in chat UI since the beginning of 2019. However, we provide sample on each of our platform that supported by SDK (https://documentation.qiscus.com/).
You can use the sample and copy paste this into your own project to be able quickly to get the UI component. You can also customize it as far as you like since all the UI now is under your control.
If you are using our old SDK version (before 2019), to update the SDK you will need to either create your own UI based on our Qiscus Chat SDK core functions, or you can take out our sample and put it into your own project.
iOS sample project : https://github.com/qiscus/qiscus-chat-sdk-ios-sample
Android sample project : https://github.com/qiscus/qiscus-chat-sdk-android-sample
Web sample project : https://github.com/qiscus/qiscus-chat-sdk-js-sample