This will allow users easily resume accidentely closed chat or just previous just he just had. Let say he clicked close, or admin closed chat, but user has another question, so user won't have to fill start chat form again, and he will be able to resume chatting just by clicking resume chat button.
This feature is live on github.
Developing application takes a lot of time. You can support application by donating. There is no company behind this application and it takes away my free time. Every donation matters and does not matter how small it is!