I just returned from Canada and having the wifi calling issue that another member had. I put on Airplane mode as suggested and can make calls however when turning off Airplane mode it goes back to dialing cellular instead of wifi hence calls not going through. Getting same message: celluar network not available for voice calls.
Try getting on WiFi and dialing
*#*#8647#*#* the issue may require you refresh your WiFi/Republic settings.
Ok will do. Thank you!