Connecting Siemens EQ9 connect with WLan

Hello, I have a Siemens EQ9, which is not connected to the router.

I had hoped to connect the machine to the world via mobile phone and hotspot, but MAschine is always looking for a homeconnect subscriber. When I use Home Connect on my mobile phone, I always get the message that the mobile phone is not connected to the WLAN.

I'm afraid I need a router, FritzBox so I can connect my mobile phone and EQ9? or is there an easier way? or is the router not enough?

I honestly don't know. I have a fully automatic coffee machine with app control... but it works via Bluetooth. But Smart HOME is definitely the future. ...Mmh.... An Alexa control in a fully automatic coffee machine would be a great idea...
"Alexa make cappuccino and reorder coffee beans"... that'd be another selling point. D:D.