Thank you for the opportunity.
Sorry but let me make inform you that we didn’t waste time. We developed demo messenger in PHP which can be integrate it in friend’s web version.
I am not sure if we are getting paid for that.
For mobile, We are not able to develop a demo because it is not 3 day task we need around 10-15 working days to complete that task and currently mobile developers are not available.
Anyway, again thanks for the opportunity.
Hopefully we can work in future again.