Without a client, do we have the chance to use the reporting module only by purchasing, if any, how many users can the reporting module be supported?
The reporting module is an add-on to an Ignition Gateway. You have to have a licensed Ignition Gateway before you could make proper use of the purchased reporting module. You can get a Vision based gateway with one single client for $1620 + reporting module. Contact IA sales team for more options and information.
A single client support model should support unlimited designer sessions, but only one running client.
The reporting module at $3,500 is unlimited (report quantity). You can buy 1 report license by talking to your IA rep for $700.