What could be the reason the web control wont work.

What could be the reason the web control wont work. not even on the same machine with http://localhost:2323
? (with printer connected)
other web/control-servers on other ports work though.

Strange. Do you have a firewall app installed ? There is a app called “netstat plus” in the play store which shows if the App has opened the port successfully or not.

Can you please try the latest update v3.07 with enabled debug logging ?