I have created, built and published a sample lex bot.
I followed steps in this link to deploy bot on Facebook messenger. ( by creatign facebook page, fb app and adding webhook etc) http://docs.aws.amazon.com/lex/latest/dg/fb-bot-association.html
For creating FB app and page I used my Facebook credentials.
Issue: I am able to interact with bot from facebook messenger ( with my facebook account) and getting desired response from bot
However, when my facebook friend interacts with bot using his facebook account, he doesn't get any response.
Am I missing something here ?
I think your Facebook App is in development mode, so you need to add your friend as a Tester in the role tab, or let Facebook approve your App.