Chat window does not display

If the inMessage chat window does not display when users click on the chat button, this might be because you host the Alcmeon SDK on a DNS domain which has not been configured in the account's configuration page. Try to go to Parameters -> Accounts -> select account and edit the Allowed domains field to include the DNS domain of your website.

How can I generate mobile notifications for my in-app chat ?

Developers can register webhooks to be notified whenever a new reply is sent to a customer by an agent: they are then responsible to send via their notification framework of choice a notification to the user's device. More details about this here