I have a pixel 6 pro and my wifi calling works flawlessly when in Canada. Now that I am in Panama I have issues with wifi calling. It doesn't seem to work with one of the ISP's and of course that's the only provider in my development. If I first hotspot my Panama phone to my Fido phone then wifi calling works and then if I switch it over to my house ISP it will continue to work. Is there any suggestions on what might be causing the issue....FYI-other Canadians wifi calling works with my wifi, but they are with a different Canadian company. I have also tried this ISP's wifi at the mall and different places and it won't initiate the wifi calling.