Cannot connect to vitoconnect 100 opto1

[Tempur]

I am having difficulties connecting to my vitoconnect after changing the WiFi network at my home.  I already reset the device (all three LEDs flashing) but after reading the QR-code and connecting to the internal web address (vitoconnect-3100), either no connection is established or I receive a fault message ("cannot find IP address").  There never is the opportunity to insert the password, which is point 3 of the instructions listed by the ViCare app.

What can I do differently?

Tempur

[CustomerCareChris]

Hello Tempur,

in this community we can only support devices sold and operated in Germany since we have no access to devices and accounts located outside of Germany.

Please contact your regional service via mail, you can find the address on the Viessmann homepage of your country under "Contact".

Best regards,
Chris - Customer Care Team