Pixel 11 - NOT ON SUPPORTED DEVICE LIST

Why is the Pixel 11 series not on this list:

https://www.lebara.co.uk/en/device-list.html
Support are refusing to assist

Why is the Pixel 11 series not on this list:
https://www.lebara.co.uk/en/device-list.html
Support are refusing to assist

Yes I am facing the same problem where I cannot receive any incoming calls. Support asked me to initially wait for 24 hrs and now 5-7 working days.